diff --git a/configure b/configure
index d5de9813..ed894e52 100755
--- a/configure
+++ b/configure
@@ -4836,11 +4836,11 @@ esac
 
 { $as_echo "$as_me:$LINENO: checking for System.map" >&5
 $as_echo_n "checking for System.map... " >&6; }
-if test -f "$MCCTRL_LINUX_SYMTAB"; then
+if test -r "$MCCTRL_LINUX_SYMTAB"; then
 	MCCTRL_LINUX_SYMTAB="$MCCTRL_LINUX_SYMTAB"
-elif test -f "/boot/System.map-`uname -r`"; then
+elif test -r "/boot/System.map-`uname -r`"; then
 	MCCTRL_LINUX_SYMTAB="/boot/System.map-`uname -r`"
-elif test -f "$KDIR/System.map"; then
+elif test -r "$KDIR/System.map"; then
 	MCCTRL_LINUX_SYMTAB="$KDIR/System.map"
 fi
 
diff --git a/configure.ac b/configure.ac
index c858ca2b..01356507 100644
--- a/configure.ac
+++ b/configure.ac
@@ -340,11 +340,11 @@ case "X$WITH_SYSTEM_MAP" in
 esac
 
 AC_MSG_CHECKING([[for System.map]])
-if test -f "$MCCTRL_LINUX_SYMTAB"; then
+if test -r "$MCCTRL_LINUX_SYMTAB"; then
 	MCCTRL_LINUX_SYMTAB="$MCCTRL_LINUX_SYMTAB"
-elif test -f "/boot/System.map-`uname -r`"; then
+elif test -r "/boot/System.map-`uname -r`"; then
 	MCCTRL_LINUX_SYMTAB="/boot/System.map-`uname -r`"
-elif test -f "$KDIR/System.map"; then
+elif test -r "$KDIR/System.map"; then
 	MCCTRL_LINUX_SYMTAB="$KDIR/System.map"
 fi