diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0f693a7..fa64db7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -100,6 +100,7 @@ Other changes
 
 | Version        | Date           | Comment  |
 | -------------- | -------------- | -------- |
+| 3.42.4         | 2018-07-09     | `cpuTemperature()` bugfix parsing negative values |
 | 3.42.3         | 2018-07-05     | `services()` bugfix not finding services with capital letters |
 | 3.42.2         | 2018-07-03     | `users()` optimized results if lack of permissions |
 | 3.42.1         | 2018-07-03     | `versions()` bugfix git version macOS |
diff --git a/lib/cpu.js b/lib/cpu.js
index a11d1fc..3616509 100644
--- a/lib/cpu.js
+++ b/lib/cpu.js
@@ -184,8 +184,8 @@ function getCpu() {
             result.speed = parseFloat(result.speed.replace(/GHz+/g, '')).toFixed(2);
             _cpu_speed = result.speed;
             result = cpuBrandManufacturer(result);
-            result.speedmin = (util.getValue(lines, 'hw.cpufrequency_min') / 1000000000.0 ).toFixed(2);
-            result.speedmax = (util.getValue(lines, 'hw.cpufrequency_max') / 1000000000.0 ).toFixed(2);
+            result.speedmin = (util.getValue(lines, 'hw.cpufrequency_min') / 1000000000.0).toFixed(2);
+            result.speedmax = (util.getValue(lines, 'hw.cpufrequency_max') / 1000000000.0).toFixed(2);
             result.vendor = util.getValue(lines, 'machdep.cpu.vendor');
             result.family = util.getValue(lines, 'machdep.cpu.family');
             result.model = util.getValue(lines, 'machdep.cpu.model');
@@ -284,9 +284,9 @@ function getCpu() {
           result.voltage = isNaN(voltage) ? '' : voltage.toFixed(2);
           for (let i = 0; i < cache.length; i++) {
             lines = cache[i].split('\n');
-            let cacheType = util.getValue(lines,'Socket Designation').toLowerCase().replace(' ', '-').split('-');
+            let cacheType = util.getValue(lines, 'Socket Designation').toLowerCase().replace(' ', '-').split('-');
             cacheType = cacheType.length ? cacheType[0] : '';
-            const sizeParts = util.getValue(lines,'Installed Size').split(' ');
+            const sizeParts = util.getValue(lines, 'Installed Size').split(' ');
             let size = parseInt(sizeParts[0], 10);
             const unit = sizeParts.length > 1 ? sizeParts[1] : 'kb';
             size = size * (unit === 'kb' ? 1024 : (unit === 'mb' ? 1024 * 1024 : (unit === 'gb' ? 1024 * 1024 * 1024 : 1)));
@@ -337,17 +337,17 @@ function getCpu() {
               if (!result.speed) {
                 result.speed = result.speedmax;
               }
-  
+
               let description = util.getValue(lines, 'description', '=').split(' ');
               for (let i = 0; i < description.length; i++) {
-                if (description[i].toLowerCase().startsWith('family') && (i+1) < description.length && description[i+1]) {
-                  result.family = description[i+1];
+                if (description[i].toLowerCase().startsWith('family') && (i + 1) < description.length && description[i + 1]) {
+                  result.family = description[i + 1];
                 }
-                if (description[i].toLowerCase().startsWith('model') && (i+1) < description.length && description[i+1]) {
-                  result.model = description[i+1];
+                if (description[i].toLowerCase().startsWith('model') && (i + 1) < description.length && description[i + 1]) {
+                  result.model = description[i + 1];
                 }
-                if (description[i].toLowerCase().startsWith('stepping') && (i+1) < description.length && description[i+1]) {
-                  result.stepping = description[i+1];
+                if (description[i].toLowerCase().startsWith('stepping') && (i + 1) < description.length && description[i + 1]) {
+                  result.stepping = description[i + 1];
                 }
               }
             }
@@ -372,7 +372,7 @@ function getCpu() {
             });
           });
         } catch (e) {
-          resolve(result);    
+          resolve(result);
         }
       }
     });
@@ -417,8 +417,8 @@ function getCpuCurrentSpeedSync() {
     avgFreq = avgFreq / cpus.length;
     return {
       min: parseFloat(((minFreq + 1) / 1000).toFixed(2)),
-      max: parseFloat(((maxFreq + 1)  / 1000).toFixed(2)),
-      avg: parseFloat(((avgFreq + 1)  / 1000).toFixed(2))
+      max: parseFloat(((maxFreq + 1) / 1000).toFixed(2)),
+      avg: parseFloat(((avgFreq + 1) / 1000).toFixed(2))
     };
   } else {
     return {
@@ -462,7 +462,7 @@ function cpuTemperature(callback) {
           if (!error) {
             let lines = stdout.toString().split('\n');
             lines.forEach(function (line) {
-              let regex = /\+([^°]*)/g;
+              let regex = /[+-]([^°]*)/g;
               let temps = line.match(regex);
               if (line.split(':')[0].toUpperCase().indexOf('PHYSICAL') !== -1) {
                 result.main = parseFloat(temps);
@@ -478,8 +478,8 @@ function cpuTemperature(callback) {
             if (callback) { callback(result); }
             resolve(result);
           } else {
-            fs.stat('/sys/class/thermal/thermal_zone0/temp', function(err) {
-              if(err === null) {
+            fs.stat('/sys/class/thermal/thermal_zone0/temp', function (err) {
+              if (err === null) {
                 exec('cat /sys/class/thermal/thermal_zone0/temp', function (error, stdout) {
                   if (!error) {
                     let lines = stdout.toString().split('\n');
@@ -570,7 +570,7 @@ function cpuTemperature(callback) {
           });
         } catch (e) {
           if (callback) { callback(result); }
-          resolve(result);    
+          resolve(result);
         }
       }
     });
@@ -614,7 +614,7 @@ function cpuFlags(callback) {
           });
         } catch (e) {
           if (callback) { callback(result); }
-          resolve(result);    
+          resolve(result);
         }
       }
       if (_linux) {
@@ -634,11 +634,11 @@ function cpuFlags(callback) {
                 result = util.getValue(lines, 'features', ':', true).toLowerCase();
               }
               if (callback) { callback(result); }
-              resolve(result);  
+              resolve(result);
             });
           } else {
             if (callback) { callback(result); }
-            resolve(result);  
+            resolve(result);
           }
         });
       }
@@ -649,7 +649,7 @@ function cpuFlags(callback) {
             let parts = stdout.toString().split('\tFlags:');
             const lines = parts.length > 1 ? parts[1].split('\tVersion:')[0].split['\n'] : [];
             lines.forEach(function (line) {
-              let flag = (line.indexOf('(') ? line .split('(')[0].toLowerCase() : '').trim().replace(/\t/g, '');
+              let flag = (line.indexOf('(') ? line.split('(')[0].toLowerCase() : '').trim().replace(/\t/g, '');
               if (flag) {
                 flags.push(flag);
               }
@@ -730,9 +730,9 @@ function cpuCache(callback) {
           }
           for (let i = 0; i < cache.length; i++) {
             const lines = cache[i].split('\n');
-            let cacheType = util.getValue(lines,'Socket Designation').toLowerCase().replace(' ', '-').split('-');
+            let cacheType = util.getValue(lines, 'Socket Designation').toLowerCase().replace(' ', '-').split('-');
             cacheType = cacheType.length ? cacheType[0] : '';
-            const sizeParts = util.getValue(lines,'Installed Size').split(' ');
+            const sizeParts = util.getValue(lines, 'Installed Size').split(' ');
             let size = parseInt(sizeParts[0], 10);
             const unit = sizeParts.length > 1 ? sizeParts[1] : 'kb';
             size = size * (unit === 'kb' ? 1024 : (unit === 'mb' ? 1024 * 1024 : (unit === 'gb' ? 1024 * 1024 * 1024 : 1)));
@@ -812,7 +812,7 @@ function cpuCache(callback) {
           });
         } catch (e) {
           if (callback) { callback(result); }
-          resolve(result);    
+          resolve(result);
         }
       }
     });