diff --git a/src/lib-popt/popt.c b/src/lib-popt/popt.c
index d2fe34f7..a23ae8aa 100644
--- a/src/lib-popt/popt.c
+++ b/src/lib-popt/popt.c
@@ -453,7 +453,7 @@ int poptGetNextOpt(poptContext con) {
 	if (opt->arg && (opt->argInfo & POPT_ARG_MASK) != POPT_ARG_NONE
 		     && (opt->argInfo & POPT_ARG_MASK) != POPT_ARG_VAL) 
 	    con->finalArgv[con->finalArgvCount++] =
-	        strcpy(malloc(strlen(con->os->nextArg)), con->os->nextArg);
+	        strcpy(malloc(strlen(con->os->nextArg)+1), con->os->nextArg);
     }
 
     if (dup) g_free(dup);