diff --git a/imgui_draw.cpp b/imgui_draw.cpp
index bacbd7f5..85ef6a92 100644
--- a/imgui_draw.cpp
+++ b/imgui_draw.cpp
@@ -1253,9 +1253,10 @@ ImFont* ImFontAtlas::AddFontDefault(const ImFontConfig* font_cfg_template)
         font_cfg.PixelSnapH = true;
     }
     if (font_cfg.Name[0] == '\0') strcpy(font_cfg.Name, "ProggyClean.ttf, 13px");
+    if (font_cfg.SizePixels <= 0.0f) font_cfg.SizePixels = 13.0f;
 
     const char* ttf_compressed_base85 = GetDefaultCompressedFontDataTTFBase85();
-    ImFont* font = AddFontFromMemoryCompressedBase85TTF(ttf_compressed_base85, 13.0f, &font_cfg, GetGlyphRangesDefault());
+    ImFont* font = AddFontFromMemoryCompressedBase85TTF(ttf_compressed_base85, font_cfg.SizePixels, &font_cfg, GetGlyphRangesDefault());
     return font;
 }