diff --git a/System/FFI/TrueType.HC b/System/FFI/TrueType.HC
index 46a90d5..f3d81ec 100644
--- a/System/FFI/TrueType.HC
+++ b/System/FFI/TrueType.HC
@@ -1,4 +1,4 @@
-U64 stbtt_heap = MAlloc(1048576 * 32);
+U64 stbtt_heap = MAlloc(1024 << 13);
 U64 stbtt_pos = 0;
 
 U64 @stbtt_malloc(I64 size)