diff --git a/internal/command/test_test.go b/internal/command/test_test.go
index 313f20b72050..94af10732550 100644
--- a/internal/command/test_test.go
+++ b/internal/command/test_test.go
@@ -223,11 +223,15 @@ func TestTest_Runs(t *testing.T) {
 			code:        0,
 		},
 		"mocking-invalid": {
-			expectedErr: []string{"Invalid outputs attribute"},
-			initCode:    1,
+			expectedErr: []string{
+				"Invalid outputs attribute",
+				"The override_computed attribute must be a boolean.",
+			},
+			initCode: 1,
 		},
 		"mocking-error": {
-			expectedErr: []string{"Unknown condition value",
+			expectedErr: []string{
+				"Unknown condition value",
 				"test_resource.primary[0].id",
 			},
 			code: 1,
diff --git a/internal/command/testdata/test/mocking-invalid/tests/override_computed_invalid_boolean.tftest.hcl b/internal/command/testdata/test/mocking-invalid/tests/override_computed_invalid_boolean.tftest.hcl
new file mode 100644
index 000000000000..59ce59f3f3e8
--- /dev/null
+++ b/internal/command/testdata/test/mocking-invalid/tests/override_computed_invalid_boolean.tftest.hcl
@@ -0,0 +1,30 @@
+mock_provider "test" {
+  alias = "primary"
+  override_computed = foo // This should be a boolean value, therefore this test should fail
+
+  mock_resource "test_resource" {
+    defaults = {
+      id = "aaaa"
+    }
+  }
+
+  override_resource {
+    target = test_resource.primary
+    values = {
+      id = "bbbb"
+    }
+  }
+}
+
+variables {
+  instances = 1
+  child_instances = 1
+}
+
+run "test" {
+
+  assert {
+    condition = test_resource.primary[0].id == "bbbb"
+    error_message = "mock not applied"
+  }
+}
diff --git a/internal/configs/mock_provider.go b/internal/configs/mock_provider.go
index 00aabce77613..7b916d86118d 100644
--- a/internal/configs/mock_provider.go
+++ b/internal/configs/mock_provider.go
@@ -83,26 +83,17 @@ func extractOverrideComputed(content *hcl.BodyContent) (*bool, hcl.Diagnostics)
 	if attr, exists := content.Attributes[overrideComputed]; exists {
 		val, valueDiags := attr.Expr.Value(nil)
 		diags = append(diags, valueDiags...)
-		if val.Type().Equals(cty.Bool) {
-			var overrideComputedBool bool
-			err := gocty.FromCtyValue(val, &overrideComputedBool)
-			if err != nil {
-				// should not happen as we already checked the type
-				diags = diags.Append(&hcl.Diagnostic{
-					Severity: hcl.DiagError,
-					Summary:  fmt.Sprintf("Invalid %s value", overrideComputed),
-					Detail:   fmt.Sprintf("The %s attribute must be a boolean.", overrideComputed),
-					Subject:  attr.Range.Ptr(),
-				})
-			}
-			return &overrideComputedBool, diags
+		var overrideComputedBool bool
+		err := gocty.FromCtyValue(val, &overrideComputedBool)
+		if err != nil {
+			diags = diags.Append(&hcl.Diagnostic{
+				Severity: hcl.DiagError,
+				Summary:  fmt.Sprintf("Invalid %s value", overrideComputed),
+				Detail:   fmt.Sprintf("The %s attribute must be a boolean.", overrideComputed),
+				Subject:  attr.Range.Ptr(),
+			})
 		}
-		diags = diags.Append(&hcl.Diagnostic{
-			Severity: hcl.DiagError,
-			Summary:  fmt.Sprintf("Invalid %s value", overrideComputed),
-			Detail:   fmt.Sprintf("The %s attribute must be a boolean.", overrideComputed),
-			Subject:  attr.Range.Ptr(),
-		})
+		return &overrideComputedBool, diags
 	}
 
 	return nil, diags