diff --git a/insmod.c b/insmod.c
index 9cb635f..31cb112 100644
--- a/insmod.c
+++ b/insmod.c
@@ -67,8 +67,8 @@
 #endif
 
 
-static char m_filename[PATH_MAX] = "\0";
-static char m_fullName[PATH_MAX] ="\0";
+static char m_filename[PATH_MAX + 1] = "\0";
+static char m_fullName[PATH_MAX + 1] = "\0";
 static const char insmod_usage[] =
     "insmod [OPTION]... MODULE [symbol=value]...\n\n"
     "Loads the specified kernel modules into the kernel.\n\n"
@@ -101,7 +101,7 @@
 {
     int len;
     char *tmp;
-    char m_name[PATH_MAX] ="\0";
+    char m_name[PATH_MAX + 1] ="\0";
     FILE *fp;
 
     if (argc<=1) {