diff --git a/src/cpu/x86/smm/smm_module_loader.c b/src/cpu/x86/smm/smm_module_loader.c
index b3ffb3d318..fb5c5f33e9 100644
--- a/src/cpu/x86/smm/smm_module_loader.c
+++ b/src/cpu/x86/smm/smm_module_loader.c
@@ -185,7 +185,7 @@ static int smm_module_setup_stub(void *smbase, struct smm_loader_params *params,
 	void *stacks_top;
 	size_t size;
 	char *base;
-	int i;
+	size_t i;
 	struct smm_stub_params *stub_params;
 	struct rmodule smm_stub;