diff --git a/src/core/image.js b/src/core/image.js
index 8aa2ae280..8861461d2 100644
--- a/src/core/image.js
+++ b/src/core/image.js
@@ -579,13 +579,7 @@ class PDFImage {
         }
 
         const remainingBits = bits - bpc;
-        let value = buf >> remainingBits;
-        if (value < 0) {
-          value = 0;
-        } else if (value > max) {
-          value = max;
-        }
-        output[i] = value;
+        output[i] = MathClamp(buf >> remainingBits, 0, max);
         buf &= (1 << remainingBits) - 1;
         bits = remainingBits;
       }