diff --git a/kernel/power/isamin.c b/kernel/power/isamin.c
index 1c1f0ad78..82f9c2691 100644
--- a/kernel/power/isamin.c
+++ b/kernel/power/isamin.c
@@ -1,3 +1,6 @@
+#if (( defined(__GNUC__)  && __GNUC__   < 6 )
+#pragma GCC optimize "O0"
+#endif
 /***************************************************************************
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 All rights reserved.