1 files changed, 1 insertions, 1 deletions
diff --git a/os2/os2.c b/os2/os2.c
index b81977e020..38e47dd0e8 100644
--- a/os2/os2.c
+++ b/os2/os2.c
@@ -1538,7 +1538,7 @@ do_spawn_nowait(pTHX_ char *cmd)
 }
 
 bool
-Perl_do_exec(pTHX_ char *cmd)
+Perl_do_exec(pTHX_ const char *cmd)
 {
     do_spawn3(aTHX_ cmd, EXECF_EXEC, 0);
     return FALSE;