diff --git a/src/kekengine/cpp/render/fonts.cpp b/src/kekengine/cpp/render/fonts.cpp
index 2e8cd5c..6e9d847 100644
--- a/src/kekengine/cpp/render/fonts.cpp
+++ b/src/kekengine/cpp/render/fonts.cpp
@@ -248,11 +248,13 @@ CharacterBlock Font::generateCharacterBlock(unsigned int block) {
 		int col = c % KEK_FONT_BITMAP_WIDTH_BLOCKS;
 		int row = c / KEK_FONT_BITMAP_WIDTH_BLOCKS;
 
-		for(unsigned int r = 0; r < face->glyph->bitmap.rows; r++) {
-			memcpy(
-				textureBytes + row * KEK_FONT_RESOLUTION * KEK_FONT_BITMAP_WIDTH + col * KEK_FONT_RESOLUTION + r * KEK_FONT_BITMAP_WIDTH,
+		// TODO: handle wide characters more gracefully
+		for(unsigned int r = 0; r < std::min(64u, face->glyph->bitmap.rows); r++) {
+			size_t offset = row * KEK_FONT_RESOLUTION * KEK_FONT_BITMAP_WIDTH + col * KEK_FONT_RESOLUTION + r * KEK_FONT_BITMAP_WIDTH;
+			size_t len = face->glyph->bitmap.width;
+			memcpy(textureBytes + offset,
 				face->glyph->bitmap.buffer + r * face->glyph->bitmap.width,
-				face->glyph->bitmap.width);
+				len);
 		}
 
 		Character ch;