diff --git a/files/source/rotate.cc b/files/source/rotate.cc
index 7d3a332..12cdd7e 100644
--- a/files/source/rotate.cc
+++ b/files/source/rotate.cc
@@ -42,6 +42,7 @@
 typedef void (*rotate_wx8_func)(const uint8*, int, uint8*, int, int);
 typedef void (*rotate_wxh_func)(const uint8*, int, uint8*, int, int, int);
 
+#if 0 // Need to add rotate_neon.s to the build to enable this
 #ifdef __ARM_NEON__
 extern "C" {
 void RestoreRegisters_NEON(unsigned long long *restore);
@@ -62,6 +63,7 @@
                          int width);
 }  // extern "C"
 #endif
+#endif
 
 #if defined(WIN32) && !defined(COVERAGE_ENABLED)
 #define HAS_TRANSPOSE_WX8_SSSE3