diff --git a/pngpriv.h b/pngpriv.h
index 1a7484c2b..dd6da817f 100644
--- a/pngpriv.h
+++ b/pngpriv.h
@@ -228,18 +228,10 @@
 #endif
 
 #ifndef PNG_INTEL_SSE_OPT
-#   ifdef PNG_INTEL_SSE
-      /* Only check for SSE if the build configuration has been modified to
-       * enable SSE optimizations.  This means that these optimizations will
-       * be off by default.  See contrib/intel for more details.
-       */
-#      if defined(__SSE4_1__) || defined(__AVX__) || defined(__SSSE3__) || \
-       defined(__SSE2__) || defined(_M_X64) || defined(_M_AMD64) || \
-       (defined(_M_IX86_FP) && _M_IX86_FP >= 2)
-#         define PNG_INTEL_SSE_OPT 1
-#      else
-#         define PNG_INTEL_SSE_OPT 0
-#      endif
+#   if defined(__SSE4_1__) || defined(__AVX__) || defined(__SSSE3__) || \
+    defined(__SSE2__) || defined(_M_X64) || defined(_M_AMD64) || \
+    (defined(_M_IX86_FP) && _M_IX86_FP >= 2)
+#      define PNG_INTEL_SSE_OPT 1
 #   else
 #      define PNG_INTEL_SSE_OPT 0
 #   endif