diff --git a/games/cataclysm-dda/files/patch-src_sdl__font.cpp b/games/cataclysm-dda/files/patch-src_sdl__font.cpp
new file mode 100644
index 000000000000..d647f1646e80
--- /dev/null
+++ b/games/cataclysm-dda/files/patch-src_sdl__font.cpp
@@ -0,0 +1,17 @@
+--- src/sdl_font.cpp.orig	2021-07-03 05:00:06 UTC
++++ src/sdl_font.cpp
+@@ -22,12 +22,12 @@ static int test_face_size( const std::string &f, int s
+ {
+     const TTF_Font_Ptr fnt( TTF_OpenFontIndex( f.c_str(), size, faceIndex ) );
+     if( fnt ) {
+-        char *style = TTF_FontFaceStyleName( fnt.get() );
++        const char *style = TTF_FontFaceStyleName( fnt.get() );
+         if( style != nullptr ) {
+             int faces = TTF_FontFaces( fnt.get() );
+             for( int i = faces - 1; i >= 0; i-- ) {
+                 const TTF_Font_Ptr tf( TTF_OpenFontIndex( f.c_str(), size, i ) );
+-                char *ts = nullptr;
++                const char *ts = nullptr;
+                 if( tf ) {
+                     if( nullptr != ( ts = TTF_FontFaceStyleName( tf.get() ) ) ) {
+                         if( 0 == strcasecmp( ts, style ) && TTF_FontHeight( tf.get() ) <= size ) {