diff --git a/frontend/dockerfile/parser/line_parsers.go b/frontend/dockerfile/parser/line_parsers.go
index b8792708..8cfd39bb 100644
--- a/frontend/dockerfile/parser/line_parsers.go
+++ b/frontend/dockerfile/parser/line_parsers.go
@@ -71,7 +71,7 @@ func parseWords(rest string) []string {
 			if unicode.IsSpace(ch) { // skip spaces
 				continue
 			}
-			phase = inWord // found it, fall thru
+			phase = inWord // found it, fall through
 		}
 		if (phase == inWord || phase == inQuote) && (pos == len(rest)) {
 			if blankOK || len(word) > 0 {
diff --git a/frontend/dockerfile/parser/utils.go b/frontend/dockerfile/parser/utils.go
index 352d7a7e..b21eb62a 100644
--- a/frontend/dockerfile/parser/utils.go
+++ b/frontend/dockerfile/parser/utils.go
@@ -118,7 +118,7 @@ func extractBuilderFlags(line string) (string, []string, error) {
 				return line[pos:], words, nil
 			}
 
-			phase = inWord // found someting with "--", fall thru
+			phase = inWord // found someting with "--", fall through
 		}
 		if (phase == inWord || phase == inQuote) && (pos == len(line)) {
 			if word != "--" && (blankOK || len(word) > 0) {