diff --git a/backend/azureblob/azureblob.go b/backend/azureblob/azureblob.go
index acf9190cc..6ed2a1e3e 100644
--- a/backend/azureblob/azureblob.go
+++ b/backend/azureblob/azureblob.go
@@ -1,6 +1,6 @@
 // Package azureblob provides an interface to the Microsoft Azure blob object storage system
 
-// +build !plan9,!solaris
+// +build !plan9,!solaris,go1.13
 
 package azureblob
 
diff --git a/backend/azureblob/azureblob_internal_test.go b/backend/azureblob/azureblob_internal_test.go
index 17fcb6272..954c08fe8 100644
--- a/backend/azureblob/azureblob_internal_test.go
+++ b/backend/azureblob/azureblob_internal_test.go
@@ -1,4 +1,4 @@
-// +build !plan9,!solaris
+// +build !plan9,!solaris,go1.13
 
 package azureblob
 
diff --git a/backend/azureblob/azureblob_test.go b/backend/azureblob/azureblob_test.go
index 1708d2108..b05020ab8 100644
--- a/backend/azureblob/azureblob_test.go
+++ b/backend/azureblob/azureblob_test.go
@@ -1,6 +1,6 @@
 // Test AzureBlob filesystem interface
 
-// +build !plan9,!solaris
+// +build !plan9,!solaris,go1.13
 
 package azureblob
 
diff --git a/backend/azureblob/azureblob_unsupported.go b/backend/azureblob/azureblob_unsupported.go
index ba0f50a4f..9b246edf2 100644
--- a/backend/azureblob/azureblob_unsupported.go
+++ b/backend/azureblob/azureblob_unsupported.go
@@ -1,6 +1,6 @@
 // Build for azureblob for unsupported platforms to stop go complaining
 // about "no buildable Go source files "
 
-// +build plan9 solaris
+// +build plan9 solaris !go1.13
 
 package azureblob