diff --git a/include/param.h b/include/param.h
index b8dd9b1..53bee54 100644
--- a/include/param.h
+++ b/include/param.h
@@ -67,7 +67,7 @@
 		int (*get)(struct param_d *p, void *priv),
 		u8 *mac, void *priv);
 
-int dev_add_param_fixed(struct device_d *dev, char *name, const char *value);
+int dev_add_param_fixed(struct device_d *dev, const char *name, const char *value);
 
 void dev_remove_param(struct param_d *p);
 
@@ -161,7 +161,7 @@
 	return NULL;
 }
 
-static inline int dev_add_param_fixed(struct device_d *dev, char *name, char *value)
+static inline int dev_add_param_fixed(struct device_d *dev, const char *name, const char *value)
 {
 	return 0;
 }
diff --git a/lib/parameter.c b/lib/parameter.c
index bcdb16b..d337ef3 100644
--- a/lib/parameter.c
+++ b/lib/parameter.c
@@ -185,7 +185,7 @@
  * @param name	The name of the parameter
  * @param value	The value of the parameter
  */
-int dev_add_param_fixed(struct device_d *dev, char *name, const char *value)
+int dev_add_param_fixed(struct device_d *dev, const char *name, const char *value)
 {
 	struct param_d *param;
 	int ret;