diff --git a/libraries/rtos/rtx/RTX_CM_lib.h b/libraries/rtos/rtx/RTX_CM_lib.h
index 734db47289..645e041cb5 100755
--- a/libraries/rtos/rtx/RTX_CM_lib.h
+++ b/libraries/rtos/rtx/RTX_CM_lib.h
@@ -31,7 +31,7 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  *---------------------------------------------------------------------------*/
-#include "error.h"
+#include "mbed_error.h"
 
 #if   defined (__CC_ARM)
 #pragma O3