diff --git a/src/static_misc.c b/src/static_misc.c
index 3a3c4ba..6801ba6 100644
--- a/src/static_misc.c
+++ b/src/static_misc.c
@@ -300,7 +300,7 @@ unsigned int kmscon_direct_hash(const void *data)
 	return (unsigned int)(unsigned long)data;
 }
 
-int kmscon_direct_equal(const void *data1, const void *data2)
+bool kmscon_direct_equal(const void *data1, const void *data2)
 {
 	return data1 == data2;
 }
diff --git a/src/static_misc.h b/src/static_misc.h
index 04fee4d..c824cba 100644
--- a/src/static_misc.h
+++ b/src/static_misc.h
@@ -76,11 +76,11 @@ void kmscon_hook_call(struct kmscon_hook *hook, void *parent, void *arg);
 struct kmscon_hashtable;
 
 typedef unsigned int (*kmscon_hash_cb) (const void *data);
-typedef int (*kmscon_equal_cb) (const void *data1, const void *data2);
+typedef bool (*kmscon_equal_cb) (const void *data1, const void *data2);
 typedef void (*kmscon_free_cb) (void *data);
 
 unsigned int kmscon_direct_hash(const void *data);
-int kmscon_direct_equal(const void *data1, const void *data2);
+bool kmscon_direct_equal(const void *data1, const void *data2);
 
 int kmscon_hashtable_new(struct kmscon_hashtable **out,
 				kmscon_hash_cb hash_cb,
diff --git a/src/unicode.c b/src/unicode.c
index 462abad..1af6592 100644
--- a/src/unicode.c
+++ b/src/unicode.c
@@ -105,7 +105,7 @@ static guint hash_ucs4(gconstpointer key)
 	return val;
 }
 
-static gboolean cmp_ucs4(gconstpointer a, gconstpointer b)
+static bool cmp_ucs4(gconstpointer a, gconstpointer b)
 {
 	size_t i;
 	const uint32_t *v1, *v2;