diff --git a/zclwrite/format.go b/zclwrite/format.go
index b9eb7e9..5f72116 100644
--- a/zclwrite/format.go
+++ b/zclwrite/format.go
@@ -231,6 +231,10 @@ func spaceAfterToken(subject, before, after *Token) bool {
 		// Don't split a function name from open paren in a call
 		return false
 
+	case subject.Type == zclsyntax.TokenDot || after.Type == zclsyntax.TokenDot:
+		// Don't use spaces around attribute access dots
+		return false
+
 	case after.Type == zclsyntax.TokenComma:
 		// No space right before a comma in an argument list
 		return false
diff --git a/zclwrite/format_test.go b/zclwrite/format_test.go
index 673f5ed..1824afb 100644
--- a/zclwrite/format_test.go
+++ b/zclwrite/format_test.go
@@ -23,6 +23,10 @@ func TestFormat(t *testing.T) {
 			`a=1`,
 			`a = 1`,
 		},
+		{
+			`a=b.c`,
+			`a = b.c`,
+		},
 		{
 			`( a+2 )`,
 			`(a + 2)`,