diff --git a/internal/resources/syntheticmonitoring/resource_check.go b/internal/resources/syntheticmonitoring/resource_check.go
index f987822b7..053b01626 100644
--- a/internal/resources/syntheticmonitoring/resource_check.go
+++ b/internal/resources/syntheticmonitoring/resource_check.go
@@ -1589,7 +1589,10 @@ func resourceCheckCustomizeDiff(ctx context.Context, diff *schema.ResourceDiff,
 	if len(settingsList) == 0 {
 		return fmt.Errorf("at least one check setting must be defined")
 	}
-	settings := settingsList[0].(map[string]interface{})
+	settings, ok := settingsList[0].(map[string]interface{})
+	if !ok {
+		return fmt.Errorf("at least one check setting must be defined")
+	}
 
 	count := 0
 	for k := range syntheticMonitoringCheckSettings.Schema {
diff --git a/internal/resources/syntheticmonitoring/resource_check_test.go b/internal/resources/syntheticmonitoring/resource_check_test.go
index 3dabbe7e1..c0a186b10 100644
--- a/internal/resources/syntheticmonitoring/resource_check_test.go
+++ b/internal/resources/syntheticmonitoring/resource_check_test.go
@@ -73,6 +73,11 @@ func TestAccResourceCheck_dns(t *testing.T) {
 					resource.TestCheckResourceAttr("grafana_synthetic_monitoring_check.dns", "settings.0.dns.0.validate_additional_rrs.0.fail_if_not_matches_regexp.0", ".+-good-stuff*"),
 				),
 			},
+			{
+				ImportState:       true,
+				ImportStateVerify: true,
+				ResourceName:      "grafana_synthetic_monitoring_check.dns",
+			},
 		},
 	})
 }
@@ -137,6 +142,11 @@ func TestAccResourceCheck_http(t *testing.T) {
 					resource.TestCheckResourceAttr("grafana_synthetic_monitoring_check.http", "settings.0.http.0.fail_if_header_matches_regexp.0.allow_missing", "true"),
 				),
 			},
+			{
+				ImportState:       true,
+				ImportStateVerify: true,
+				ResourceName:      "grafana_synthetic_monitoring_check.http",
+			},
 		},
 	})
 }
@@ -182,6 +192,11 @@ func TestAccResourceCheck_ping(t *testing.T) {
 					resource.TestCheckResourceAttr("grafana_synthetic_monitoring_check.ping", "settings.0.ping.0.dont_fragment", "true"),
 				),
 			},
+			{
+				ImportState:       true,
+				ImportStateVerify: true,
+				ResourceName:      "grafana_synthetic_monitoring_check.ping",
+			},
 		},
 	})
 }
@@ -233,6 +248,11 @@ func TestAccResourceCheck_tcp(t *testing.T) {
 					resource.TestMatchResourceAttr("grafana_synthetic_monitoring_check.tcp", "settings.0.tcp.0.tls_config.0.ca_cert", regexp.MustCompile((`^-{5}BEGIN CERTIFICATE`))),
 				),
 			},
+			{
+				ImportState:       true,
+				ImportStateVerify: true,
+				ResourceName:      "grafana_synthetic_monitoring_check.tcp",
+			},
 		},
 	})
 }
@@ -280,6 +300,11 @@ func TestAccResourceCheck_traceroute(t *testing.T) {
 					resource.TestCheckResourceAttr("grafana_synthetic_monitoring_check.traceroute", "settings.0.traceroute.0.ptr_lookup", "false"),
 				),
 			},
+			{
+				ImportState:       true,
+				ImportStateVerify: true,
+				ResourceName:      "grafana_synthetic_monitoring_check.traceroute",
+			},
 		},
 	})
 }
@@ -365,6 +390,11 @@ func TestAccResourceCheck_multihttp(t *testing.T) {
 					resource.TestCheckResourceAttr("grafana_synthetic_monitoring_check.multihttp", "settings.0.multihttp.0.entries.1.assertions.4.expression", "$.slideshow.slides"),
 				),
 			},
+			{
+				ImportState:       true,
+				ImportStateVerify: true,
+				ResourceName:      "grafana_synthetic_monitoring_check.multihttp",
+			},
 		},
 	})
 }