diff --git a/apps/aqhome-data/c_updatedata.c b/apps/aqhome-data/c_updatedata.c
index 5863459..cd9165e 100644
--- a/apps/aqhome-data/c_updatedata.c
+++ b/apps/aqhome-data/c_updatedata.c
@@ -38,7 +38,7 @@
  * ------------------------------------------------------------------------------------------------
  */
 
-static int _storeDataPoints(AQHOME_DATA *aqh, const AQH_VALUE *v, const uint64_t *dataPoints, int numValues);
+static int _storeDataPoints(AQHOME_DATA *aqh, const AQH_VALUE *v, const uint64_t *dataPoints, unsigned int numValues);
 static void _sendDataChangedMsgToAllClients(AQHOME_DATA *aqh, GWEN_MSG_ENDPOINT *epSrc, const AQH_VALUE *v,
 					    const uint64_t *dataPoints, uint32_t numValues);
 
@@ -93,7 +93,7 @@ void AqHomeData_HandleUpdateData(AQHOME_DATA *aqh, GWEN_MSG_ENDPOINT *ep, GWEN_M
 
 
 
-int _storeDataPoints(AQHOME_DATA *aqh, const AQH_VALUE *v, const uint64_t *dataPoints, int numValues)
+int _storeDataPoints(AQHOME_DATA *aqh, const AQH_VALUE *v, const uint64_t *dataPoints, unsigned int numValues)
 {
   uint32_t i;