diff --git a/src/game/enemies/drisame.c b/src/game/enemies/drisame.c
index 453a3d4c..09835156 100644
--- a/src/game/enemies/drisame.c
+++ b/src/game/enemies/drisame.c
@@ -405,4 +405,4 @@ void TaskDestructor_IceBlock(struct Task *t)
     VramFree(iceBlock->s.graphics.dest);
     VramFree(iceBlock->s2.graphics.dest);
     VramFree(iceBlock->s3.graphics.dest);
-}
\ No newline at end of file
+}
diff --git a/src/game/multiplayer/mode_select_2.c b/src/game/multiplayer/mode_select_2.c
index 6b8b3ebc..d488d02c 100644
--- a/src/game/multiplayer/mode_select_2.c
+++ b/src/game/multiplayer/mode_select_2.c
@@ -389,4 +389,4 @@ void sub_8010060(void)
         SA2_LABEL(gUnknown_03002280)[0][2] = -1;
         SA2_LABEL(gUnknown_03002280)[0][3] = 0x20;
     }
-}
\ No newline at end of file
+}
diff --git a/tools/_shared/arena_alloc/Makefile b/tools/_shared/arena_alloc/Makefile
index 60ecedab..bfbc2bcb 100644
--- a/tools/_shared/arena_alloc/Makefile
+++ b/tools/_shared/arena_alloc/Makefile
@@ -9,7 +9,7 @@ all: libarena_alloc.a
 	@:
 
 %.o: $(SOURCE)
-	$(CC) -O2 $(SOURCE) -static -c $< $(LDFLAGS)
+	$(CC) -O2 -std=gnu11 $(SOURCE) -static -c $< $(LDFLAGS)
 
 libarena_alloc.a: arena_alloc.o
 	$(AR) -rcs $@ $<