diff --git a/src/Makefile.am b/src/Makefile.am
index 789b5e7..65c9d1d 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -31,9 +31,9 @@ apfl_internal_headers += context.h
 apfl_internal_headers += format.h
 apfl_internal_headers += gc.h
 apfl_internal_headers += hashmap.h
-apfl_internal_headers += internal.h
 apfl_internal_headers += resizable.h
 apfl_internal_headers += scope.h
+apfl_internal_headers += strings.h
 apfl_internal_headers += value.h
 
 EXTRA_DIST = $(apfl_internal_headers) apfl.h
diff --git a/src/context.c b/src/context.c
index c703678..1482bed 100644
--- a/src/context.c
+++ b/src/context.c
@@ -7,8 +7,8 @@
 #include "context.h"
 #include "gc.h"
 #include "hashmap.h"
-#include "internal.h"
 #include "resizable.h"
+#include "strings.h"
 #include "value.h"
 
 static struct stack *
diff --git a/src/eval.c b/src/eval.c
index 3b4f007..c59aea3 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -7,7 +7,7 @@
 #include "compile.h"
 #include "context.h"
 #include "hashmap.h"
-#include "internal.h"
+#include "strings.h"
 #include "value.h"
 
 #define TRY(ex)                         \
diff --git a/src/expr.c b/src/expr.c
index 4e9da57..38a8165 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -6,7 +6,6 @@
 
 #include "alloc.h"
 #include "format.h"
-#include "internal.h"
 
 #define TRY(x) do { if (!(x)) return false; } while (0)
 
diff --git a/src/parser.c b/src/parser.c
index 6acdc68..6019dc2 100644
--- a/src/parser.c
+++ b/src/parser.c
@@ -6,7 +6,6 @@
 
 #include "alloc.h"
 #include "resizable.h"
-#include "internal.h"
 
 struct apfl_parser {
     struct apfl_allocator allocator;
diff --git a/src/strings.c b/src/strings.c
index 8d2d7fd..4131174 100644
--- a/src/strings.c
+++ b/src/strings.c
@@ -7,8 +7,8 @@
 
 #include "alloc.h"
 #include "gc.h"
-#include "internal.h"
 #include "resizable.h"
+#include "strings.h"
 
 struct apfl_string_view
 apfl_string_view_from_view(struct apfl_string_view view)
diff --git a/src/internal.h b/src/strings.h
similarity index 61%
rename from src/internal.h
rename to src/strings.h
index 96c527c..a53f8fb 100644
--- a/src/internal.h
+++ b/src/strings.h
@@ -1,17 +1,13 @@
-#ifndef APFL_INTERNAL_H
-#define APFL_INTERNAL_H
+#ifndef APFL_STRINGS_H
+#define APFL_STRINGS_H
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#include <stdio.h>
-#include <stdlib.h>
-
+#include "apfl.h"
 #include "gc.h"
 
-// Internal use only functions
-
 struct apfl_string *apfl_string_move_into_new_gc_string(struct gc *gc, struct apfl_string *in);
 
 #ifdef __cplusplus
diff --git a/src/value.c b/src/value.c
index 8e88bea..28334b4 100644
--- a/src/value.c
+++ b/src/value.c
@@ -5,7 +5,6 @@
 #include "alloc.h"
 #include "context.h"
 #include "format.h"
-#include "internal.h"
 #include "resizable.h"
 #include "hashmap.h"
 #include "value.h"