diff --git a/gfx/skia/skia/src/core/SkScalerContext.h b/gfx/skia/skia/src/core/SkScalerContext.h
index 48ec0624cf..b1748bd0ee 100644
--- a/gfx/skia/skia/src/core/SkScalerContext.h
+++ b/gfx/skia/skia/src/core/SkScalerContext.h
@@ -73,8 +73,11 @@ struct SkScalerContextRec {
         return SkIntToScalar(fContrast) / ((1 << 8) - 1);
     }
     void setContrast(SkScalar c) {
-        SkASSERT(0 <= c && c <= SK_Scalar1);
-        fContrast = SkScalarRoundToInt(c * ((1 << 8) - 1));
+        if (0 <= c && c <= SK_Scalar1) {
+          fContrast = SkScalarRoundToInt(c * ((1 << 8) - 1));
+        } else {
+          fContrast = SkScalarRoundToInt(0.5f * ((1 << 8) - 1));
+        }
     }
 
     /**