diff --git a/bruteforce/p2pk_bruteforce.cpp b/bruteforce/p2pk_bruteforce.cpp
index a116c76..dca5b92 100644
--- a/bruteforce/p2pk_bruteforce.cpp
+++ b/bruteforce/p2pk_bruteforce.cpp
@@ -33,7 +33,9 @@
 #include <algorithm>
 #include <cctype>
 #include <sched.h>
-#include <immintrin.h> // Per SIMD intrinsics (SSE/AVX)
+#if defined(__x86_64__) || defined(__i386__) || defined(_M_X64) || defined(_M_IX86)
+#include <immintrin.h> // Per SIMD intrinsics (SSE/AVX) su x86
+#endif
 
 // ============================================================================
 // CONFIGURAZIONE OTTIMIZZATA