diff --git a/checkov/terraform/checks/resource/gcp/GoogleComputeDefaultServiceAccountFullAccess.py b/checkov/terraform/checks/resource/gcp/GoogleComputeDefaultServiceAccountFullAccess.py
index 905c8e875ab..c47a1809e59 100644
--- a/checkov/terraform/checks/resource/gcp/GoogleComputeDefaultServiceAccountFullAccess.py
+++ b/checkov/terraform/checks/resource/gcp/GoogleComputeDefaultServiceAccountFullAccess.py
@@ -23,9 +23,13 @@ def scan_resource_conf(self, conf):
         :param conf: google_compute_instance configuration
         :return: <CheckResult>
         """
-        if 'name' in conf and conf['name'][0].startswith('gke-'):
-            self.evaluated_keys = ['name']
-            return CheckResult.PASSED
+
+        if 'name' in conf:
+            if not isinstance(conf['name'][0], str):
+                return CheckResult.UNKNOWN
+            if conf['name'][0].startswith('gke-'):
+                self.evaluated_keys = ['name']
+                return CheckResult.PASSED
 
         if 'source_instance_template' in conf.keys() and 'service_account' not in conf.keys():
             # if the source_instance_template value is there (indicating a google_compute_instance_from_template),
diff --git a/checkov/terraform/checks/resource/gcp/GoogleComputeIPForward.py b/checkov/terraform/checks/resource/gcp/GoogleComputeIPForward.py
index 53ed2d75935..ec49b1a7d4d 100644
--- a/checkov/terraform/checks/resource/gcp/GoogleComputeIPForward.py
+++ b/checkov/terraform/checks/resource/gcp/GoogleComputeIPForward.py
@@ -31,6 +31,8 @@ def get_excluded_key(self):
         return "name"
 
     def check_excluded_condition(self, value):
+        if not isinstance(value, str):
+            return False
         return value.startswith('gke-')
 
 
diff --git a/tests/terraform/checks/resource/gcp/test_GoogleComputeDefaultServiceAccountFullAccess.py b/tests/terraform/checks/resource/gcp/test_GoogleComputeDefaultServiceAccountFullAccess.py
index b49804d5f80..4c9d8257876 100644
--- a/tests/terraform/checks/resource/gcp/test_GoogleComputeDefaultServiceAccountFullAccess.py
+++ b/tests/terraform/checks/resource/gcp/test_GoogleComputeDefaultServiceAccountFullAccess.py
@@ -122,6 +122,17 @@ def test_unknown(self):
         resource_conf = hcl_res['resource'][0]['google_compute_instance_from_template']['default']
         scan_result = check.scan_resource_conf(conf=resource_conf)
         self.assertEqual(CheckResult.UNKNOWN, scan_result)
+        
+    def test_unknown2(self):
+        hcl_res = hcl2.loads("""
+            resource "google_compute_instance_from_template" "default" {
+              name         = {}
+              source_instance_template = google_compute_instance_template.tpl.id
+            }
+                """)
+        resource_conf = hcl_res['resource'][0]['google_compute_instance_from_template']['default']
+        scan_result = check.scan_resource_conf(conf=resource_conf)
+        self.assertEqual(CheckResult.UNKNOWN, scan_result)
 
 
 if __name__ == '__main__':