diff --git a/packages/mocktail/CHANGELOG.md b/packages/mocktail/CHANGELOG.md
index 16f2871..2be234a 100644
--- a/packages/mocktail/CHANGELOG.md
+++ b/packages/mocktail/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 0.0.2-dev.5
+
+- fix: `verify` should use arg matcher from invocation if a matcher wasn't provided
+
 # 0.0.2-dev.4
 
 - **BREAKING** fix: `verifyInOrder` handles multiple method invocation verifications
diff --git a/packages/mocktail/lib/src/_is_invocation.dart b/packages/mocktail/lib/src/_is_invocation.dart
index f297939..cba2fbc 100644
--- a/packages/mocktail/lib/src/_is_invocation.dart
+++ b/packages/mocktail/lib/src/_is_invocation.dart
@@ -253,9 +253,21 @@ class _InvocationForMatchedArguments extends Invocation {
     while (storedIndex < _storedArgs.length &&
         positionalIndex < invocation.positionalArguments.length) {
       final arg = _storedArgs[storedIndex];
-      positionalArguments.add(arg);
-      storedIndex++;
-      positionalIndex++;
+      final dynamic positionalArgument =
+          invocation.positionalArguments[positionalIndex];
+      if (positionalArgument == null ||
+          positionalArgument == arg._fallbackValue) {
+        // Add the [ArgMatcher] given to the argument matching helper.
+        positionalArguments.add(arg);
+        storedIndex++;
+        positionalIndex++;
+      } else {
+        // An argument matching helper was not used; add the [ArgMatcher] from
+        // [invocation].
+        positionalArguments
+            .add(invocation.positionalArguments[positionalIndex]);
+        positionalIndex++;
+      }
     }
     while (positionalIndex < invocation.positionalArguments.length) {
       // Some trailing non-ArgMatcher arguments.
diff --git a/packages/mocktail/pubspec.yaml b/packages/mocktail/pubspec.yaml
index 3bce326..d521fae 100644
--- a/packages/mocktail/pubspec.yaml
+++ b/packages/mocktail/pubspec.yaml
@@ -1,6 +1,6 @@
 name: mocktail
 description: A Dart mocking library which simplifies mocking with null safety support and no manual mocks or code generation.
-version: 0.0.2-dev.4
+version: 0.0.2-dev.5
 repository: https://github.com/felangel/mocktail
 homepage: https://github.com/felangel/mocktail/tree/main/packages/mocktail
 
diff --git a/packages/mocktail/test/mocktail_test.dart b/packages/mocktail/test/mocktail_test.dart
index 1f6f4d8..0598650 100644
--- a/packages/mocktail/test/mocktail_test.dart
+++ b/packages/mocktail/test/mocktail_test.dart
@@ -25,6 +25,7 @@ class Foo {
   void voidWithDefaultNamedArg({int x = 0}) {}
   void voidWithDefaultNamedArgs({int x = 0, int y = 0}) {}
   void voidWithPositionalAndOptionalNamedArg(int x, {int? y}) {}
+  void voidWithPositionalArgs(int x, int y) {}
 }
 
 class Bar {
@@ -413,6 +414,12 @@ void main() {
       );
     });
 
+    test('when voidWithPositionalArgs with partial matchers', () {
+      when(() => foo.voidWithPositionalArgs(any(), any())).thenReturn(null);
+      expect(() => foo.voidWithPositionalArgs(1, 10), returnsNormally);
+      verify(() => foo.voidWithPositionalArgs(1, any())).called(1);
+    });
+
     test('throws Exception when thenThrow is used to stub the mock', () {
       final exception = Exception('oops');
       when(() => foo.streamValue).thenThrow(exception);