diff --git a/README.md b/README.md
index 7a4169f..303053b 100644
--- a/README.md
+++ b/README.md
@@ -63,8 +63,8 @@ This library is splitted in several sections:
 | si.cpu() | X | X | CPU information|
 | - brand | X | X | e.g. 'Intel(R)' |
 | - speed | X | X | e.g. '3.40GHz' |
+| - cores | X | X | # cores |
 | si.cpu_currentspeed() | X | X | current speed (GHz)|
-| si.cores() | X | X | # cores |
 | si.cpu_temperature() | X | | CPU temperature (if sensors is installed) |
 | - main | X | X | main temperature |
 | - cores | X | X | array of temperatures |
@@ -127,6 +127,9 @@ si.network_speed('eth1', function(data) {
 
 | Version        | Date           | Comment  |
 | -------------- | -------------- | -------- |
+| 1.0.3          | 2015-07-18     | bugfix cpu cores |
+| 1.0.2          | 2015-07-18     | bugfix cpu_currentspeed, cpu_temperature |
+| 1.0.1          | 2015-07-18     | documentation update |
 | 1.0.0          | 2015-07-18     | bug-fixes, version bumb, published as npm component |
 | 0.0.3          | 2014-04-14     | bug-fix (cpu_speed) |
 | 0.0.2          | 2014-03-14     | Optimization FS-Speed & CPU current speed |
@@ -172,7 +175,8 @@ Written by Sebastian Hildebrandt [sebhildebrandt](https://github.com/sebhildebra
 >OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 >THE SOFTWARE.
 > 
->Further details see LICENSE(LICENSE) file.
+>Further details see LICENSE file.
+MIT(LICENSE)
 
 
 [npm-image]: https://img.shields.io/npm/v/systeminformation.svg
diff --git a/lib/index.js b/lib/index.js
index bad6dca..7009d7b 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -171,12 +171,13 @@ exports.osinfo =function(callback) {
 // ----------------------------------------------------------------------------------
 
 // --------------------------
-// CPU - data
+// CPU - brand, speed
 
-exports.cpu = function(callback) {
+function getcpu(callback) {
 	var result = {
 		brand : 'unknown',
-		speed : 'unknown'
+		speed : 'unknown',
+		cores : tmp_cores
 	};
 	// grep "^model name" /proc/cpuinfo 2>/dev/null || sysctl -n machdep.cpu.brand_string
 	if (tmp_platform == 'Darwin') {
@@ -204,6 +205,33 @@ exports.cpu = function(callback) {
 	}
 }
 
+// --------------------------
+// CPU - Processor cores
+
+function cores(callback) {
+	exec("grep -c ^processor /proc/cpuinfo 2>/dev/null || sysctl -n hw.ncpu", function(error, stdout, stderr) {
+		var result = {cores: 1};
+		if (!error) {
+			result.cores = parseInt(stdout.toString());
+			tmp_cores = result.cores;
+    	}
+    	if (callback) callback(result);
+  });
+}
+
+// --------------------------
+// CPU - Processor Data
+
+exports.cpu = function(callback) {
+	if (tmp_cores == 0) {
+		cores(function(data) {
+			getcpu(callback)
+		})
+	} else {
+		getcpu(callback)
+	}
+}
+
 // --------------------------
 // CPU - current speed
 
@@ -232,22 +260,6 @@ exports.cpu_currentspeed = function(callback) {
 	}
 }
 
-// --------------------------
-// CPU - Processor cores
-
-function cores(callback) {
-	exec("grep -c ^processor /proc/cpuinfo 2>/dev/null || sysctl -n hw.ncpu", function(error, stdout, stderr) {
-		var result = {cores: 1};
-		if (!error) {
-			result.cores = parseInt(stdout.toString());
-			tmp_cores = result.cores;
-    	}
-    	if (callback) callback(result);
-  });
-}
-
-exports.cores = cores;
-
 // --------------------------
 // CPU - temperature 
 // if sensors are installed