diff --git a/src/ast/scopes/ParameterScope.ts b/src/ast/scopes/ParameterScope.ts
index 4e29d59f6b8..c5823008da7 100644
--- a/src/ast/scopes/ParameterScope.ts
+++ b/src/ast/scopes/ParameterScope.ts
@@ -58,7 +58,8 @@ export default class ParameterScope extends ChildScope {
 						calledFromTryStatement = true;
 					}
 				}
-			} else if (!argIncluded && arg.shouldBeIncluded()) {
+			}
+			if (!argIncluded && arg.shouldBeIncluded()) {
 				argIncluded = true;
 			}
 			if (argIncluded) {
diff --git a/test/form/samples/treeshake-excess-arguments/argument-side-effects/_config.js b/test/form/samples/treeshake-excess-arguments/argument-side-effects/_config.js
new file mode 100644
index 00000000000..d2acef03025
--- /dev/null
+++ b/test/form/samples/treeshake-excess-arguments/argument-side-effects/_config.js
@@ -0,0 +1,3 @@
+module.exports = {
+	description: 'retains arguments that have side-effects'
+};
diff --git a/test/form/samples/treeshake-excess-arguments/argument-side-effects/_expected.js b/test/form/samples/treeshake-excess-arguments/argument-side-effects/_expected.js
new file mode 100644
index 00000000000..b92aab28bbc
--- /dev/null
+++ b/test/form/samples/treeshake-excess-arguments/argument-side-effects/_expected.js
@@ -0,0 +1,10 @@
+function sideEffects() {
+	console.log('print message');
+	return true;
+}
+
+function hola(a, b) {
+	console.log(a);
+}
+
+hola(1, sideEffects());
diff --git a/test/form/samples/treeshake-excess-arguments/argument-side-effects/main.js b/test/form/samples/treeshake-excess-arguments/argument-side-effects/main.js
new file mode 100644
index 00000000000..b92aab28bbc
--- /dev/null
+++ b/test/form/samples/treeshake-excess-arguments/argument-side-effects/main.js
@@ -0,0 +1,10 @@
+function sideEffects() {
+	console.log('print message');
+	return true;
+}
+
+function hola(a, b) {
+	console.log(a);
+}
+
+hola(1, sideEffects());