diff --git a/src/video/windows/SDL_windowsmodes.c b/src/video/windows/SDL_windowsmodes.c
index 97ddc736d..73cae8f37 100644
--- a/src/video/windows/SDL_windowsmodes.c
+++ b/src/video/windows/SDL_windowsmodes.c
@@ -245,6 +245,7 @@ WIN_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
         }
         if (SDL_ISPIXELFORMAT_INDEXED(mode.format)) {
             /* We don't support palettized modes now */
+            SDL_free(mode.driverdata);
             continue;
         }
         if (mode.format != SDL_PIXELFORMAT_UNKNOWN) {
@@ -252,6 +253,9 @@ WIN_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
                 SDL_free(mode.driverdata);
             }
         }
+        else {
+            SDL_free(mode.driverdata);
+        }
     }
 }