diff --git a/main.go b/main.go
index 68fdd2c..c8c5f8b 100644
--- a/main.go
+++ b/main.go
@@ -29,7 +29,7 @@ func main() {
 
 	// These flags have to be passed to the Compile function
 	if *multiLineFlag {
-		flagsToCompile = append(flagsToCompile, RE_MULTILINE)
+		flagsToCompile = append(flagsToCompile, RE_MULTILINE, RE_SINGLE_LINE)
 	}
 	if *caseInsensitiveFlag {
 		flagsToCompile = append(flagsToCompile, RE_CASE_INSENSITIVE)