2 files changed, 2 insertions, 2 deletions
diff --git a/list.c b/list.c
index a10b5ed..2854e18 100644
--- a/list.c
+++ b/list.c
@@ -59,7 +59,7 @@ listAdjoin(char *car, ListPtr cdr)
 }
 
 char *
-dsprintf(char *f, ...)
+dsprintf(const char *f, ...)
 {
     va_list args;
     char *string;
diff --git a/list.h b/list.h
index 686fd9b..7403bc0 100644
--- a/list.h
+++ b/list.h
@@ -25,7 +25,7 @@
 
 #include <X11/Xfuncproto.h> /* for _X_ATTRIBUTE_PRINTF */
 
-char *dsprintf(char *f, ...) _X_ATTRIBUTE_PRINTF(1,2);
+char *dsprintf(const char *f, ...) _X_ATTRIBUTE_PRINTF(1,2);
 
 typedef struct _List {
     char *value;