diff --git a/vanitygen.c b/vanitygen.c
index 9d88121..be4bfd5 100644
--- a/vanitygen.c
+++ b/vanitygen.c
@@ -244,6 +244,9 @@ vg_thread_loop(void *arg)
 int
 count_processors(void)
 {
+#if defined(__APPLE__)
+    int count = sysconf(_SC_NPROCESSORS_ONLN);
+#else
 	FILE *fp;
 	char buf[512];
 	int count = 0;
@@ -257,7 +260,8 @@ count_processors(void)
 			count += 1;
 	}
 	fclose(fp);
-	return count;
+#endif
+    return count;
 }
 #endif