1 files changed, 4 insertions, 4 deletions
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index 1b0c617632..56a04f9b7f 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -7506,15 +7506,15 @@ int null_func(void)
 }
 
 int
-erl_drv_putenv(char *key, char *value)
+erl_drv_putenv(const char *key, char *value)
 {
-    return erts_sys_putenv_raw(key, value);
+    return erts_sys_putenv_raw((char*)key, value);
 }
 
 int
-erl_drv_getenv(char *key, char *value, size_t *value_size)
+erl_drv_getenv(const char *key, char *value, size_t *value_size)
 {
-    return erts_sys_getenv_raw(key, value, value_size);
+    return erts_sys_getenv_raw((char*)key, value, value_size);
 }
 
 /* get heart_port