diff --git a/Makefile b/Makefile
index 4dc4f9a..3642172 100644
--- a/Makefile
+++ b/Makefile
@@ -9,12 +9,11 @@ TARGET_CONV ?= qoiconv
 all: $(TARGET_BENCH) $(TARGET_CONV)
 
 bench: $(TARGET_BENCH)
-
-$(TARGET_BENCH):$(TARGET_BENCH).c
+$(TARGET_BENCH):$(TARGET_BENCH).c qoi.h
 	$(CC) $(CFLAGS_BENCH) $(CFLAGS) $(TARGET_BENCH).c -o $(TARGET_BENCH) $(LFLAGS_BENCH)
 
 conv: $(TARGET_CONV)
-$(TARGET_CONV):$(TARGET_CONV).c
+$(TARGET_CONV):$(TARGET_CONV).c qoi.h
 	$(CC) $(CFLAGS_CONV) $(CFLAGS) $(TARGET_CONV).c -o $(TARGET_CONV)
 
 .PHONY: clean