diff --git a/configure b/configure
index 9cd14c136..0c4d484d4 100755
--- a/configure
+++ b/configure
@@ -8271,11 +8271,11 @@ NSOCK_BUILD="nsock_build"
 
 # Check whether --with-libnsock was given.
 if test "${with_libnsock+set}" = set; then
-  withval=$with_libnsock;   case "$with_nsock" in
+  withval=$with_libnsock;   case "$with_libnsock" in
   yes)
     ;;
   *)
-    NSOCKDIR="$with_nsock"
+    NSOCKDIR="$with_libnsock"
     NSOCK_BUILD=""
     ;;
   esac
diff --git a/configure.ac b/configure.ac
index 68b0fb804..fad22f380 100644
--- a/configure.ac
+++ b/configure.ac
@@ -670,11 +670,11 @@ NSOCKDIR="nsock"
 NSOCK_BUILD="nsock_build"
 AC_ARG_WITH(libnsock,
 AC_HELP_STRING([--with-libnsock=DIR], [Compile and link to libnsock in DIR]),
-[  case "$with_nsock" in
+[  case "$with_libnsock" in
   yes)
     ;;
   *)
-    NSOCKDIR="$with_nsock"
+    NSOCKDIR="$with_libnsock"
     NSOCK_BUILD=""
     ;;
   esac]