diff --git a/src/io/SDL_iostream.c b/src/io/SDL_iostream.c
index 6b1eacd0ab..8172c8e773 100644
--- a/src/io/SDL_iostream.c
+++ b/src/io/SDL_iostream.c
@@ -1513,7 +1513,8 @@ SDL_PropertiesID SDL_GetIOProperties(SDL_IOStream *context)
 Sint64 SDL_GetIOSize(SDL_IOStream *context)
 {
     CHECK_PARAM(!context) {
-        return SDL_InvalidParamError("context");
+        SDL_InvalidParamError("context");
+        return -1;
     }
 
     if (!context->iface.size) {