diff --git a/lib/gpt_rme/gpt_rme.c b/lib/gpt_rme/gpt_rme.c
index d6fbc04..e001e5f 100644
--- a/lib/gpt_rme/gpt_rme.c
+++ b/lib/gpt_rme/gpt_rme.c
@@ -1076,7 +1076,7 @@
 		VERBOSE("      Caller: %u, Current GPI: %u\n", src_sec_state,
 			gpi_info.gpi);
 		spin_unlock(&gpt_lock);
-		return -EINVAL;
+		return -EPERM;
 	}
 
 	if (src_sec_state == SMC_FROM_SECURE) {
@@ -1197,7 +1197,7 @@
 		VERBOSE("      Caller: %u, Current GPI: %u\n", src_sec_state,
 			gpi_info.gpi);
 		spin_unlock(&gpt_lock);
-		return -EINVAL;
+		return -EPERM;
 	}