diff --git a/internal/c/libqb.cpp b/internal/c/libqb.cpp
index 33d073e9d..2ef52c488 100644
--- a/internal/c/libqb.cpp
+++ b/internal/c/libqb.cpp
@@ -64,7 +64,7 @@ return (word << shift) | (word >> (32 - shift));
     uint64 qbr_longdouble_to_uint64(long double f){if (f<0) return(f-0.5f); else return(f+0.5f);}
     int32 qbr_float_to_long(float f){if (f<0) return(f-0.5f); else return(f+0.5f);}
     int32 qbr_double_to_long(double f){if (f<0) return(f-0.5f); else return(f+0.5f);}
-    void fpu_reinit() { // do nothing }
+    void fpu_reinit() { } // do nothing
     #else
     //QBASIC compatible rounding via FPU:
     //FLDS=load single
diff --git a/internal/c/os.h b/internal/c/os.h
index 9865681f9..869121445 100644
--- a/internal/c/os.h
+++ b/internal/c/os.h
@@ -40,6 +40,10 @@
     #define QB64_32
 #endif
 
+#if !defined(i386) && !defined(__x86_64__)
+    #define QB64_NOT_X86
+#endif
+
 /* common types (not quite an include guard, but allows an including
     * file to not have these included.
     *