diff --git a/source/nordic_sdk/components/softdevice/s130/headers/nrf_svc.h b/source/nordic_sdk/components/softdevice/s130/headers/nrf_svc.h
index 3e907ea..fcb05a1 100644
--- a/source/nordic_sdk/components/softdevice/s130/headers/nrf_svc.h
+++ b/source/nordic_sdk/components/softdevice/s130/headers/nrf_svc.h
@@ -53,7 +53,7 @@
   { \
     __asm( \
         "svc %0\n" \
-        "bx r14" : : "I" (number) : "r0" \
+        "bx r14" : : "I" ((uint32_t) number) : "r0" \
     ); \
   }    \
   _Pragma("GCC diagnostic pop")