diff --git a/GsmWithGnss.h b/GsmWithGnss.h
index 94f3f3e..0f7b755 100644
--- a/GsmWithGnss.h
+++ b/GsmWithGnss.h
@@ -106,7 +106,7 @@ bool GsmWithGnss_InvalidateNetworkEnable(tGsmWithGnss *env, uint32_t currentStat
 
 void GsmWithGnss_SetNetworkRegistration(tGsmWithGnss *env, bool value);
 
-bool GsmWithGnss_WaitNetworkRegistration(tGsmWithGnss *env, uint16_t timeReg);
+bool GsmWithGnss_WaitNetworkRegistration(tGsmWithGnss *env, uint32_t timeReg);
 
 void GsmWithGnss_UseInternalAntenna(tGsmWithGnss *env, bool value);