diff --git a/.changelog/31449.txt b/.changelog/31449.txt
new file mode 100644
index 00000000000..212065c70d7
--- /dev/null
+++ b/.changelog/31449.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+resource/aws_ecr_registry_scanning_configuration: Correctly delete rules on resource Update 
+```
\ No newline at end of file
diff --git a/internal/service/ecr/registry_scanning_configuration.go b/internal/service/ecr/registry_scanning_configuration.go
index b47ca40a6f7..a857f5f21af 100644
--- a/internal/service/ecr/registry_scanning_configuration.go
+++ b/internal/service/ecr/registry_scanning_configuration.go
@@ -136,10 +136,6 @@ func resourceRegistryScanningConfigurationDelete(ctx context.Context, d *schema.
 // Helper functions
 
 func expandScanningRegistryRules(l []interface{}) []*ecr.RegistryScanningRule {
-	if len(l) == 0 || l[0] == nil {
-		return nil
-	}
-
 	rules := make([]*ecr.RegistryScanningRule, 0)
 
 	for _, rule := range l {
diff --git a/internal/service/ecr/registry_scanning_configuration_test.go b/internal/service/ecr/registry_scanning_configuration_test.go
index 6fb0d2d9004..bf9b17940db 100644
--- a/internal/service/ecr/registry_scanning_configuration_test.go
+++ b/internal/service/ecr/registry_scanning_configuration_test.go
@@ -109,6 +109,25 @@ func testAccRegistryScanningConfiguration_update(t *testing.T) {
 					resource.TestCheckResourceAttr(resourceName, "scan_type", "ENHANCED"),
 				),
 			},
+			{
+				ResourceName:      resourceName,
+				ImportState:       true,
+				ImportStateVerify: true,
+			},
+			{
+				Config: testAccRegistryScanningConfigurationConfig_basic(),
+				Check: resource.ComposeTestCheckFunc(
+					testAccRegistryScanningConfigurationExists(ctx, resourceName, &v),
+					acctest.CheckResourceAttrAccountID(resourceName, "registry_id"),
+					resource.TestCheckResourceAttr(resourceName, "rule.#", "0"),
+					resource.TestCheckResourceAttr(resourceName, "scan_type", "BASIC"),
+				),
+			},
+			{
+				ResourceName:      resourceName,
+				ImportState:       true,
+				ImportStateVerify: true,
+			},
 		},
 	})
 }