diff --git a/lib/readline/colors.c b/lib/readline/colors.c
--- a/lib/readline/colors.c
+++ b/lib/readline/colors.c
@@ -73,7 +73,7 @@
 static bool is_colored (enum indicator_no type);
 static void restore_default_color (void);
 
-#define RL_COLOR_PREFIX_EXTENSION	"readline-colored-completion-prefix"
+#define RL_COLOR_PREFIX_EXTENSION	".readline-colored-completion-prefix"
 
 COLOR_EXT_TYPE *_rl_color_ext_list = 0;
 
diff --git a/patchlevel.h b/patchlevel.h
--- a/patchlevel.h
+++ b/patchlevel.h
@@ -25,6 +25,6 @@
    regexp `^#define[ 	]*PATCHLEVEL', since that's what support/mkversion.sh
    looks for to find the patch level (for the sccs version string). */
 
-#define PATCHLEVEL 25
+#define PATCHLEVEL 26
 
 #endif /* _PATCHLEVEL_H_ */