diff --git a/test/card_test.c b/test/card_test.c
index 1ac9507..df2108d 100644
--- a/test/card_test.c
+++ b/test/card_test.c
@@ -1,5 +1,4 @@
 #include <assert.h>
-#include <stdbool.h>
 #include "../lib/card.h"
 
 void test_initialize_card() {
diff --git a/test/frame_test.c b/test/frame_test.c
index 5c7bb9e..12e7b05 100644
--- a/test/frame_test.c
+++ b/test/frame_test.c
@@ -1,5 +1,4 @@
 #include <assert.h>
-#include <stdbool.h>
 #include "../lib/frame.h"
 
 void test_initialize_frame() {
diff --git a/test/stack_test.c b/test/stack_test.c
index 229a77e..8d9729f 100644
--- a/test/stack_test.c
+++ b/test/stack_test.c
@@ -1,5 +1,4 @@
 #include <assert.h>
-#include <stdbool.h>
 #include "../lib/stack.h"
 
 void test_stack() {