diff --git a/Tests/ExportImport/Import/A/imp_testExe1.c b/Tests/ExportImport/Import/A/imp_testExe1.c
index 7490a809c0..d3b0e9ed21 100644
--- a/Tests/ExportImport/Import/A/imp_testExe1.c
+++ b/Tests/ExportImport/Import/A/imp_testExe1.c
@@ -19,7 +19,7 @@ extern int testStaticLibPlugin(void);
 #else
 #  define testLib4libcfg testLib4libopt
 #endif
-extern testLib4libcfg(void);
+extern int testLib4libcfg(void);
 
 int main()
 {
diff --git a/Tests/TargetName/executables/hello_world.c b/Tests/TargetName/executables/hello_world.c
index 5b6eaf8bf1..71d71f56d5 100644
--- a/Tests/TargetName/executables/hello_world.c
+++ b/Tests/TargetName/executables/hello_world.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
-main()
+int main(void)
 {
   printf("hello, world\n");
+  return 0;
 }