diff --git a/src/bin/keymap/Keymap.cpp b/src/bin/keymap/Keymap.cpp
index 0bf6cf81d5..c90fce03bf 100644
--- a/src/bin/keymap/Keymap.cpp
+++ b/src/bin/keymap/Keymap.cpp
@@ -687,7 +687,7 @@ Keymap::SaveAsCppHeader(const char* fileName, const char* mapName)
 
 	fputs("};\n\n", file);
 
-	fputs("const char kSystemKeyChars[] = {\n", file);
+	fputs("const uchar kSystemKeyChars[] = {\n", file);
 
 	for (uint32 i = 0; i < fCharsSize; i++) {
 		if (i % 10 == 0) {