diff --git a/galoisAvx512_amd64.s b/galoisAvx512_amd64.s
index 97ad420..09f1d0d 100644
--- a/galoisAvx512_amd64.s
+++ b/galoisAvx512_amd64.s
@@ -1,4 +1,6 @@
-//+build !noasm !appengine !gccgo
+//+build !noasm
+//+build !appengine
+//+build !gccgo
 
 // Copyright 2015, Klaus Post, see LICENSE for details.
 // Copyright 2019, Minio, Inc.
diff --git a/galois_amd64.s b/galois_amd64.s
index 3501110..f1dc8d5 100644
--- a/galois_amd64.s
+++ b/galois_amd64.s
@@ -1,4 +1,6 @@
-//+build !noasm !appengine !gccgo
+//+build !noasm
+//+build !appengine
+//+build !gccgo
 
 // Copyright 2015, Klaus Post, see LICENSE for details.
 
diff --git a/galois_arm64.s b/galois_arm64.s
index d2cac2c..3ae3237 100644
--- a/galois_arm64.s
+++ b/galois_arm64.s
@@ -1,4 +1,6 @@
-//+build !noasm !appengine !gccgo
+//+build !noasm
+//+build !appengine
+//+build !gccgo
 
 // Copyright 2015, Klaus Post, see LICENSE for details.
 // Copyright 2017, Minio, Inc.
diff --git a/galois_ppc64le.s b/galois_ppc64le.s
index 8838f0c..7213c61 100644
--- a/galois_ppc64le.s
+++ b/galois_ppc64le.s
@@ -1,4 +1,6 @@
-//+build !noasm !appengine !gccgo
+//+build !noasm
+//+build !appengine
+//+build !gccgo
 
 // Copyright 2015, Klaus Post, see LICENSE for details.
 // Copyright 2018, Minio, Inc.