diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1fdd45c..23186f3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Fixes Makefile
 - Fixes -f- not to be interpreted as -f --
+- Fixes -f-flag not to be interpreted as -f --flag
 
 ## [3.3.1] - 2024-07-30
 
diff --git a/lib/getoptions_base.sh b/lib/getoptions_base.sh
index 8aae4fa..db28176 100644
--- a/lib/getoptions_base.sh
+++ b/lib/getoptions_base.sh
@@ -147,7 +147,7 @@ getoptions() {
 	[ "$_alt" ] || {
 		[ "$_opts" ] && _op "-[$_opts]?*" "" ";;"
 		[ ! "$_flags" ] || _op "-[$_flags]?*" - "OPTARG= ;;" \
-			'[ "$2" = -- ] && set -- "$1" unknown -- && '"$_rest=x; "
+			'case $2 in --*) set -- "$1" unknown "$2" && '"$_rest=x; esac;"
 	}
 	[ "$_plus" ] && {
 		[ "$_nflags" ] && _op "+[$_nflags]?*" + "unset OPTARG ;;"
diff --git a/spec/getoptions_base_spec.sh b/spec/getoptions_base_spec.sh
index 57d7b7c..c218e6a 100644
--- a/spec/getoptions_base_spec.sh
+++ b/spec/getoptions_base_spec.sh
@@ -140,6 +140,15 @@ Describe "getoptions()"
 			End
 		End
 
+		Context "when the combined short option contains -"
+			parser_definition() { setup ARGS; flag FLAG -f --flag; }
+			It "displays error"
+				When run parse -f-flag
+				The stderr should eq "Unrecognized option: --flag"
+				The status should be failure
+			End
+		End
+
 		Context "when specified unknown long option"
 			parser_definition() { setup ARGS; }
 			It "displays error"