diff --git a/build/aclocal/gtk-2.0.m4 b/build/aclocal/gtk-2.0.m4
index 3c6b6dd8eb..533ebecfac 100644
--- a/build/aclocal/gtk-2.0.m4
+++ b/build/aclocal/gtk-2.0.m4
@@ -80,8 +80,10 @@ main ()
   tmp_version = g_strdup("$min_gtk_version");
   if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
      printf("%s, bad version string\n", "$min_gtk_version");
+     g_free(tmp_version);
      exit(1);
    }
+  g_free(tmp_version);
 
   if ((gtk_major_version != $gtk_config_major_version) ||
       (gtk_minor_version != $gtk_config_minor_version) ||
diff --git a/build/aclocal/gtk.m4 b/build/aclocal/gtk.m4
index 6f6a4222f8..0a9961fb66 100644
--- a/build/aclocal/gtk.m4
+++ b/build/aclocal/gtk.m4
@@ -78,9 +78,11 @@ main ()
   /* HP/UX 9 (%@#!) writes to sscanf strings */
   tmp_version = g_strdup("$min_gtk_version");
   if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
+     g_free(tmp_version);
      printf("%s, bad version string\n", "$min_gtk_version");
      exit(1);
    }
+  g_free(tmp_version);
 
   if ((gtk_major_version != $gtk_config_major_version) ||
       (gtk_minor_version != $gtk_config_minor_version) ||
diff --git a/configure b/configure
index 0a6727e2ca..968e728974 100755
--- a/configure
+++ b/configure
@@ -23471,8 +23471,10 @@ main ()
   tmp_version = g_strdup("$min_gtk_version");
   if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
      printf("%s, bad version string\n", "$min_gtk_version");
+     g_free(tmp_version);
      exit(1);
    }
+  g_free(tmp_version);
 
   if ((gtk_major_version != $gtk_config_major_version) ||
       (gtk_minor_version != $gtk_config_minor_version) ||
@@ -23997,9 +23999,11 @@ main ()
   /* HP/UX 9 (%@#!) writes to sscanf strings */
   tmp_version = g_strdup("$min_gtk_version");
   if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
+     g_free(tmp_version);
      printf("%s, bad version string\n", "$min_gtk_version");
      exit(1);
    }
+  g_free(tmp_version);
 
   if ((gtk_major_version != $gtk_config_major_version) ||
       (gtk_minor_version != $gtk_config_minor_version) ||
@@ -24269,9 +24273,11 @@ main ()
   /* HP/UX 9 (%@#!) writes to sscanf strings */
   tmp_version = g_strdup("$min_gtk_version");
   if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
+     g_free(tmp_version);
      printf("%s, bad version string\n", "$min_gtk_version");
      exit(1);
    }
+  g_free(tmp_version);
 
   if ((gtk_major_version != $gtk_config_major_version) ||
       (gtk_minor_version != $gtk_config_minor_version) ||