diff --git a/makina-compiler/test/code_generator_test/makefile b/makina-compiler/test/code_generator_test/makefile
index 27b1e71..aa6cafc 100644
--- a/makina-compiler/test/code_generator_test/makefile
+++ b/makina-compiler/test/code_generator_test/makefile
@@ -3,7 +3,7 @@ test: out/test
 	./out/test
 
 out/test: test_driver.c out/test.c out/test.h out
-	gcc test_driver.c out/test.c -I "." -std=c99 -Wall -Wextra -o out/test
+	gcc test_driver.c out/test.c -I "." -std=c99 -Wall -Wextra -Werror -o out/test
 	
 out/test.c:
 	java -jar ../../out/artifacts/makina_compiler_jar/makina-compiler.jar test_source.mkna -m "struct machine_data" -e "struct event_data" -i "test_data.h" -o out
diff --git a/makina-compiler/test/code_generator_test/test_driver.c b/makina-compiler/test/code_generator_test/test_driver.c
index e8df37e..360435b 100644
--- a/makina-compiler/test/code_generator_test/test_driver.c
+++ b/makina-compiler/test/code_generator_test/test_driver.c
@@ -5,66 +5,79 @@
 FILE *output;
 
 int s1_s2_entry(struct test *self, struct test_event *event) {
+    (void)self; (void)event;
     fprintf(output, "s1_s2_entry\n");
     return 0;
 }
 
 int s1_s2_e1_guard(struct test *self, struct test_event *event) {
+    (void)self; (void)event;
     fprintf(output, "s1_s2_e1_guard\n");
     return event->ctx.guard;
 }
 
 int s1_s2_e1_action(struct test *self, struct test_event *event) {
+    (void)self; (void)event;
     fprintf(output, "s1_s2_e1_action\n");
     return 0;
 }
 
 int s1_s2_exit(struct test *self, struct test_event *event) {
+    (void)self; (void)event;
     fprintf(output, "s1_s2_exit\n");
     return 0;
 }
 
 int s1_entry(struct test *self, struct test_event *event) {
+    (void)self; (void)event;
     fprintf(output, "s1_entry\n");
     return 0;
 }
 
 int s1_exit(struct test *self, struct test_event *event) {
+    (void)self; (void)event;
     fprintf(output, "s1_exit\n");
     return 0;
 }
 
 int s2_s3_entry(struct test *self, struct test_event *event) {
+    (void)self; (void)event;
     fprintf(output, "s2_s3_entry\n");
     return 0;
 }
 
 int s2_s3_exit(struct test *self, struct test_event *event) {
+    (void)self; (void)event;
     fprintf(output, "s2_s3_exit\n");
     return 0;
 }
 
 int s2_s1_entry(struct test *self, struct test_event *event) {
+    (void)self; (void)event;
     fprintf(output, "s2_s1_entry\n");
     return 0;
 }
 
 int s2_s1_e1_action(struct test *self, struct test_event *event) {
+    (void)self; (void)event;
     fprintf(output, "s2_s1_e1_action\n");
     return 0;
 }
 
 int s2_s1_exit(struct test *self, struct test_event *event) {
+    (void)self; (void)event;
     fprintf(output, "s2_s1_exit\n");
     return 0;
 }
 
 int s2_entry(struct test *self, struct test_event *event) {
+    (void)self; (void)event;
     fprintf(output, "s2_entry\n");
     return 0;
 }
 
 int s2_exit(struct test *self, struct test_event *event) {
+    (void)self; (void)event;
     fprintf(output, "s2_exit\n");
     return 0;
 }