diff --git a/src/font_file_lister_fontconfig.cpp b/src/font_file_lister_fontconfig.cpp
index f822783db..a361dea73 100644
--- a/src/font_file_lister_fontconfig.cpp
+++ b/src/font_file_lister_fontconfig.cpp
@@ -109,11 +109,9 @@ CollectionResult FontConfigFontFileLister::GetFontPaths(std::string const& facen
 		}
 	}
 
-	if (weight > 80) {
-		int actual_weight = weight;
-		if (FcPatternGetInteger(match, FC_WEIGHT, 0, &actual_weight) == FcResultMatch)
-			ret.fake_bold = actual_weight <= 80;
-	}
+	int actual_weight = 0;
+	if (FcPatternGetInteger(match, FC_WEIGHT, 0, &actual_weight) == FcResultMatch)
+		ret.fake_bold = weight > FcWeightToOpenType(actual_weight) + 150;
 
 	int actual_slant = slant;
 	if (FcPatternGetInteger(match, FC_SLANT, 0, &actual_slant) == FcResultMatch)