3 files changed, 4 insertions, 4 deletions

diff --git a/libbb/dump.c b/libbb/dump.c
index 1815ca914..f078afc1c 100644
--- a/libbb/dump.c
+++ b/libbb/dump.c
@@ -291,7 +291,7 @@ static void rewrite(FS * fs)
         }
 }
 
-static void do_skip(char *fname, int statok)
+static void do_skip(const char *fname, int statok)
 {
         struct stat sbuf;
 
diff --git a/libbb/get_last_path_component.c b/libbb/get_last_path_component.c
index 311909726..b7bc0e626 100644
--- a/libbb/get_last_path_component.c
+++ b/libbb/get_last_path_component.c
@@ -26,7 +26,7 @@ char *bb_get_last_path_component(char *path)
         if (*first == '/') {
                 last = first;
         }
-        last[1] = 0;
+        last[1] = '\0';
 
         return first;
 }
diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c
index 54d291ab1..601ff3f7e 100644
--- a/libbb/xfuncs.c
+++ b/libbb/xfuncs.c
@@ -184,7 +184,7 @@ pid_t spawn(char **argv)
         /* Why static? */
         static int failed;
         pid_t pid;
-        char *prog;
+        const char *prog;
 
         // Be nice to nommu machines.
         failed = 0;
@@ -240,7 +240,7 @@ void xsetenv(const char *key, const char *value)
 // Fifth char is always '\0'
 void smart_ulltoa5(unsigned long long ul, char buf[5])
 {
-        char *fmt;
+        const char *fmt;
         char c;
         unsigned v,idx = 0;
         ul *= 10;