diff --git a/SourceS/miniwin.h b/SourceS/miniwin.h
index 380f2a84e..05b91b4cc 100644
--- a/SourceS/miniwin.h
+++ b/SourceS/miniwin.h
@@ -15,7 +15,12 @@
 #include <time.h>
 // For _rotr()
 #if !defined(_MSC_VER) && defined(DEVILUTION_ENGINE)
+#if defined(__x86_64__) || defined(__i386__)
 #include <x86intrin.h>
+#else
+unsigned int _rotl(unsigned int value, int shift);
+unsigned int _rotr(unsigned int value, int shift);
+#endif
 #endif
 
 #ifndef _WIN32
diff --git a/SourceX/miniwin/misc.cpp b/SourceX/miniwin/misc.cpp
index 1b650f0b8..39199e0eb 100644
--- a/SourceX/miniwin/misc.cpp
+++ b/SourceX/miniwin/misc.cpp
@@ -14,6 +14,22 @@ namespace dvl {
 
 DWORD last_error;
 
+#if !defined(_MSC_VER) && defined(DEVILUTION_ENGINE) && !defined(__x86_64__) && !defined(__i386__)
+unsigned int _rotl(unsigned int value, int shift)
+{
+	if ((shift &= 31) == 0)
+		return value;
+	return (value << shift) | (value >> (32 - shift));
+}
+
+unsigned int _rotr(unsigned int value, int shift)
+{
+	if ((shift &= 31) == 0)
+		return value;
+	return (value >> shift) | (value << (32 - shift));
+}
+#endif
+
 DWORD GetLastError()
 {
 	return last_error;