diff --git a/debug/deck_debug.c b/debug/deck_debug.c
index 4a8bca5..6792443 100644
--- a/debug/deck_debug.c
+++ b/debug/deck_debug.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include "stack_debug.h"
 #include "deck_debug.h"
 
 void print_deck(struct deck *deck) {
diff --git a/debug/stack_debug.c b/debug/stack_debug.c
index a53b038..d60e656 100644
--- a/debug/stack_debug.c
+++ b/debug/stack_debug.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include "card_debug.h"
 #include "stack_debug.h"
 
 void print_stack(struct stack *stack) {