diff --git a/src/target/algorithm.c b/src/target/algorithm.c
index 64abffc7b..dee1f364b 100644
--- a/src/target/algorithm.c
+++ b/src/target/algorithm.c
@@ -26,7 +26,8 @@ void destroy_mem_param(struct mem_param *param)
 	param->value = NULL;
 }
 
-void init_reg_param(struct reg_param *param, char *reg_name, uint32_t size, enum param_direction direction)
+void init_reg_param(struct reg_param *param, const char *reg_name,
+	uint32_t size, enum param_direction direction)
 {
 	param->reg_name = reg_name;
 	param->size = size;
diff --git a/src/target/algorithm.h b/src/target/algorithm.h
index 25f1a66ab..45b3fd97a 100644
--- a/src/target/algorithm.h
+++ b/src/target/algorithm.h
@@ -35,8 +35,8 @@ void init_mem_param(struct mem_param *param,
 		uint32_t address, uint32_t size, enum param_direction dir);
 void destroy_mem_param(struct mem_param *param);
 
-void init_reg_param(struct reg_param *param,
-		char *reg_name, uint32_t size, enum param_direction dir);
+void init_reg_param(struct reg_param *param, const char *reg_name,
+	uint32_t size, enum param_direction dir);
 void destroy_reg_param(struct reg_param *param);
 
 #endif /* OPENOCD_TARGET_ALGORITHM_H */