diff --git a/os/common/ports/ARMCMx/devices/K20x/cmparams.h b/os/common/ports/ARMCMx/devices/K20x/cmparams.h
index c1589b9c2..98b0ecd19 100644
--- a/os/common/ports/ARMCMx/devices/K20x/cmparams.h
+++ b/os/common/ports/ARMCMx/devices/K20x/cmparams.h
@@ -61,7 +61,7 @@
  * @note    This number does not include the 16 system vectors and must be
  *          rounded to a multiple of 8.
  */
-#define CORTEX_NUM_VECTORS      32
+#define CORTEX_NUM_VECTORS      48
 
 /* The following code is not processed when the file is included from an
    asm module.*/