diff --git a/idlib/math/Math.h b/idlib/math/Math.h
index eb1abf1..b8a6a95 100644
--- a/idlib/math/Math.h
+++ b/idlib/math/Math.h
@@ -30,8 +30,6 @@ If you have questions concerning this license or the applicable additional terms
 #define __MATH_MATH_H__
 
 #ifdef MACOS_X
-// for square root estimate instruction
-#include <ppc_intrinsics.h>
 // for FLT_MIN
 #include <float.h>
 #endif
diff --git a/idlib/math/Simd_AltiVec.cpp b/idlib/math/Simd_AltiVec.cpp
index 594d1b6..eb3a70b 100644
--- a/idlib/math/Simd_AltiVec.cpp
+++ b/idlib/math/Simd_AltiVec.cpp
@@ -35,10 +35,6 @@ If you have questions concerning this license or the applicable additional terms
 #include <math.h>
 #include <float.h>
 
-#ifdef PPC_INTRINSICS
-	#include <ppc_intrinsics.h>
-#endif
-
 // Doom3 SIMD Library version 0.5
 // Patrick Flanagan (pflanagan@apple.com)
 // Sanjay Patel (spatel@apple.com)
@@ -53,6 +49,11 @@ If you have questions concerning this license or the applicable additional terms
 
 #if defined(MACOS_X) && defined(__ppc__)
 
+#ifdef PPC_INTRINSICS
+	// for square root estimate instruction
+	#include <ppc_intrinsics.h>
+#endif
+
 // Data struct sizes
 
 #ifndef DRAWVERT_PADDED