diff --git a/libs/pbd/fpu.cc b/libs/pbd/fpu.cc
index a6663d22b4..ad80e0c93c 100644
--- a/libs/pbd/fpu.cc
+++ b/libs/pbd/fpu.cc
@@ -23,9 +23,12 @@
 #include <cstring> // for memset
 #include <cstdlib>
 #include <stdint.h>
-#include <intrin.h>
 #include <assert.h>
 
+#ifdef PLATFORM_WINDOWS
+#include <intrin.h>
+#endif
+
 #include "pbd/fpu.h"
 #include "pbd/error.h"