2 files changed, 11 insertions, 10 deletions
diff --git a/win32/win32.c b/win32/win32.c
index 784d585e14..53939d4ec9 100644
--- a/win32/win32.c
+++ b/win32/win32.c
@@ -618,9 +618,10 @@ rb_w32_get_osfhandle(int fh)
 }
 
 int
-rb_w32_argv_size(const char *const *argv)
+rb_w32_argv_size(char *const *argv)
 {
-    const char *p, *const *t;
+    const char *p;
+    char *const *t;
     int len, n, bs, quote;
 
     for (t = argv, len = 0; *t; t++) {
@@ -648,10 +649,10 @@ rb_w32_argv_size(const char *const *argv)
 }
 
 char *
-rb_w32_join_argv(char *cmd, const char *const *argv)
+rb_w32_join_argv(char *cmd, char *const *argv)
 {
-    const char *p, *s, *const *t;
-    char *q;
+    const char *p, *s;
+    char *q, *const *t;
     int n, bs, quote;
 
     for (t = argv, q = cmd; p = *t; t++) {
@@ -846,7 +847,7 @@ rb_w32_spawn(int mode, const char *cmd, const char *prog)
 }
 
 int
-rb_w32_aspawn(int mode, const char *prog, const char *const *argv)
+rb_w32_aspawn(int mode, const char *prog, char *const *argv)
 {
     int len = rb_w32_argv_size(argv);
     char *cmd = ALLOCA_N(char, len);
diff --git a/win32/win32.h b/win32/win32.h
index e6bb50ca8a..bbc855e13f 100644
--- a/win32/win32.h
+++ b/win32/win32.h
@@ -187,10 +187,10 @@ extern int chown(const char *, int, int);
 extern int link(const char *, const char *);
 extern int gettimeofday(struct timeval *, struct timezone *);
 extern rb_pid_t waitpid (rb_pid_t, int *, int);
-extern int rb_w32_argv_size(const char *const *);
-extern char *rb_w32_join_argv(char *, const char *const *);
-extern int rb_w32_spawn(int, const char *, const char *);
-extern int rb_w32_aspawn(int, const char *, const char *const *);
+extern int rb_w32_argv_size(char *const *);
+extern char *rb_w32_join_argv(char *, char *const *);
+extern int rb_w32_spawn(int, const char *, const char*);
+extern int rb_w32_aspawn(int, const char *, char *const *);
 extern int kill(int, int);
 extern int fcntl(int, int, ...);
 extern rb_pid_t rb_w32_getpid(void);