diff --git a/autoconf/libcurl.m4 b/autoconf/libcurl.m4
index 9a31bfc8bb..e1ae2a47e6 100644
--- a/autoconf/libcurl.m4
+++ b/autoconf/libcurl.m4
@@ -80,7 +80,7 @@ AC_DEFUN([AST_LIBCURL_CHECK_CONFIG],
   AH_TEMPLATE([LIBCURL_PROTOCOL_POP3],[Defined if libcurl supports POP3])
   AH_TEMPLATE([LIBCURL_PROTOCOL_IMAP],[Defined if libcurl supports IMAP])
   AH_TEMPLATE([LIBCURL_PROTOCOL_SMTP],[Defined if libcurl supports SMTP])
-  AC_SUBST(PBX_CURL)
+  AC_SUBST(PBX_CURL, 0)
 
   AC_ARG_WITH(libcurl,
      AS_HELP_STRING([--with-libcurl=PREFIX],[look for the curl library in PREFIX/lib and headers in PREFIX/include]),
@@ -248,7 +248,6 @@ if (x) {;}
         else
            unset CURL_LIB
            unset CURL_INCLUDE
-           PBX_CURL=0
         fi
      fi
 
diff --git a/configure b/configure
index d13e5ef491..984f53b70d 100755
--- a/configure
+++ b/configure
@@ -10247,6 +10247,7 @@ fi
 
 
 
+  PBX_CURL=0
 
 
 
@@ -10586,7 +10587,6 @@ _ACEOF
         else
            unset CURL_LIB
            unset CURL_INCLUDE
-           PBX_CURL=0
         fi
      fi