diff --git a/debug.h b/debug.h
index 1095262..8297c68 100644
--- a/debug.h
+++ b/debug.h
@@ -1,5 +1,5 @@
-#ifndef _fencer_debug_h
-#define _fencer_debug_h
+#ifndef CUTES_DEBUG_H
+#define CUTES_DEBUG_H
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -66,4 +66,4 @@ extern int g_debug_log_lvl;
     }\
 } while(0)
 
-#endif // !_fencer_debug_h
+#endif // !CUTES_DEBUG_H
diff --git a/dictionary.h b/dictionary.h
index 3c67068..724d11c 100644
--- a/dictionary.h
+++ b/dictionary.h
@@ -1,5 +1,5 @@
-#ifndef _fencer_hash_map_h
-#define _fencer_hash_map_h
+#ifndef CUTES_DICTIONARY_H
+#define CUTES_DICTIONARY_H
 
 #include "list.h"
 
@@ -43,4 +43,4 @@ dictionary_new(sizeof(Type_))
 #define dictionary_get_value(Type_, Dict_, Key_)\
 *((Type_*)dictionary_get_raw(Dict_, Key_))
 
-#endif // !_fencer_hash_map_h
+#endif // !CUTES_DICTIONARY_H
diff --git a/drop.h b/drop.h
index 7b51877..c9fff22 100644
--- a/drop.h
+++ b/drop.h
@@ -1,5 +1,5 @@
-#ifndef _fencer_drop_h
-#define _fencer_drop_h
+#ifndef CUTES_DROP_H
+#define CUTES_DROP_H
 
 #include "typeclass_helpers.h"
 
@@ -30,4 +30,4 @@ Drop T##_as_Drop(T* x) {\
     };\
     return (Drop){.tc = &tc, .data = x};\
 }
-#endif // !_fencer_drop_h
+#endif // !CUTES_DROP_H
diff --git a/list.h b/list.h
index 4fb79d0..a08dad5 100644
--- a/list.h
+++ b/list.h
@@ -1,5 +1,5 @@
-#ifndef _fencer_list_h
-#define _fencer_list_h
+#ifndef CUTES_LIST_H
+#define CUTES_LIST_H
 
 #include "stddef.h"
 
@@ -38,4 +38,4 @@ extern size_t list_contains(List* self, void* query);
 
 #define list_iterator_begin_as(T, __list) ((T*)(list_iterator_begin(__list)))
 
-#endif // !_fencer_list_h
+#endif // !CUTES_LIST_H
diff --git a/mirror.h b/mirror.h
index 398a454..5c07ede 100644
--- a/mirror.h
+++ b/mirror.h
@@ -1,5 +1,5 @@
-#ifndef _fencer_mirror_h
-#define _fencer_mirror_h
+#ifndef CUTES_MIRROR_H
+#define CUTES_MIRROR_H
 
 #include "typeclass_helpers.h"
 #include "stdint.h"
@@ -123,4 +123,4 @@ Dictionary* T##_get_typeclasses(T* self) {\
 }\
 impl_Mirror_for(T, T##_get_typestring, T##_get_typeid, T##_get_typeclasses)
 
-#endif // !_fencer_mirror_h
+#endif // !CUTES_MIRROR_H
diff --git a/strutil.h b/strutil.h
index ae8592a..b7b285c 100644
--- a/strutil.h
+++ b/strutil.h
@@ -1,5 +1,5 @@
-#ifndef _fencer_strutil_h
-#define _fencer_strutil_h
+#ifndef CUTES_STRUTIL_H
+#define CUTES_STRUTIL_H
 
 #include "stdlib.h"
 #include "stdint.h"
@@ -14,4 +14,4 @@ extern long strcount(const char* begin, const char* end, char search);
 extern long strfirst_pred(const char* begin, const char* end, CharPredFn pred);
 extern long strlast_pred(const char* rbegin, const char* rend, CharPredFn pred);
 
-#endif // !_fencer_strutil_h
+#endif // !CUTES_STRUTIL_H
diff --git a/typeclass_helpers.h b/typeclass_helpers.h
index 5f24513..1fca1a3 100644
--- a/typeclass_helpers.h
+++ b/typeclass_helpers.h
@@ -1,5 +1,5 @@
-#ifndef _fencer_typeclass_helpers_h
-#define _fencer_typeclass_helpers_h
+#ifndef CUTES_TYPECLASS_HELPERS_H
+#define CUTES_TYPECLASS_HELPERS_H
 
 #define TC_FN_TYPECHECK(__Return, __Name, ...)\
 __Return (*const __Name##_)(__VA_ARGS__) = __Name; (void)__Name##_
@@ -7,4 +7,4 @@ __Return (*const __Name##_)(__VA_ARGS__) = __Name; (void)__Name##_
 #define decl_typeclass_impl(__Typeclass, __Type)\
 extern __Typeclass __Type##_as_##__Typeclass(__Type*);
 
-#endif // !_fencer_typeclass_helpers_h
+#endif // !CUTES_TYPECLASS_HELPERS_H
diff --git a/variant.h b/variant.h
index ef3fce0..38154cc 100644
--- a/variant.h
+++ b/variant.h
@@ -1,5 +1,5 @@
-#ifndef _fencer_variant_h
-#define _fencer_variant_h
+#ifndef CUTES_VARIANT_H
+#define CUTES_VARIANT_H
 
 #include "vmath.h"
 #include "mirror.h"
@@ -33,4 +33,4 @@ extern void destroy_contained(Variant* self);
 #define StringVariant(Value_, BufSize_) (Variant){.type = Variant_String, .as_string = Value_, .string_size = BufSize_}
 #define UndefinedVariant() (Variant){.type = Variant_Undefined }
 
-#endif // !_fencer_variant_h
+#endif // !CUTES_VARIANT_H
diff --git a/vmath.h b/vmath.h
index 7c99083..c3f5d76 100644
--- a/vmath.h
+++ b/vmath.h
@@ -1,5 +1,5 @@
-#ifndef _fencer_vmath_h
-#define _fencer_vmath_h
+#ifndef CUTES_VMATH_H
+#define CUTES_VMATH_H
 
 #include "stddef.h"
 #include <math.h>
@@ -178,4 +178,4 @@ IVector vmuli(IVector a, IVector b) {
     return (IVector){a.x * b.x, a.y * b.y};
 }
 
-#endif // !_fencer_vmath_h
+#endif // !CUTES_VMATH_H