diff --git a/pkg/asset/installconfig/aws/permissions.go b/pkg/asset/installconfig/aws/permissions.go
index 42734e1e34c..58f6a812d67 100644
--- a/pkg/asset/installconfig/aws/permissions.go
+++ b/pkg/asset/installconfig/aws/permissions.go
@@ -739,8 +739,9 @@ func includesAssumeRole(installConfig *types.InstallConfig) bool {
 }
 
 func includesWavelengthZones(installConfig *types.InstallConfig) bool {
-	// Examples of WL zones: us-east-1-wl1-atl-wlz-1, eu-west-2-wl1-lon-wlz-1, eu-west-2-wl2-man-wlz1 ...
-	isWLZoneRegex := regexp.MustCompile(`wl\d\-.*$`)
+	// Examples of WL zones: us-east-1-wl1-atl-wlz-1, eu-west-2-wl1-lon-wlz-1, eu-west-2-wl2-man-wlz-1, etc
+	// https://docs.aws.amazon.com/wavelength/latest/developerguide/available-wavelength-zones.html
+	isWLZoneRegex := regexp.MustCompile(`-wlz.*$`)
 
 	for _, mpool := range installConfig.Compute {
 		if mpool.Name != types.MachinePoolEdgeRoleName || mpool.Platform.AWS == nil {
diff --git a/pkg/asset/installconfig/aws/permissions_test.go b/pkg/asset/installconfig/aws/permissions_test.go
index 68f5a2fa096..6a5baaab011 100644
--- a/pkg/asset/installconfig/aws/permissions_test.go
+++ b/pkg/asset/installconfig/aws/permissions_test.go
@@ -878,17 +878,33 @@ func TestIncludesAssumeRole(t *testing.T) {
 
 func TestIncludesWavelengthZones(t *testing.T) {
 	t.Run("Should be true when edge compute specified with WL zones", func(t *testing.T) {
-		ic := validBYOSubnetsInstallConfig()
-		ic.Compute = append(ic.Compute, types.MachinePool{
-			Name: "edge",
-			Platform: types.MachinePoolPlatform{
-				AWS: &aws.MachinePool{
-					Zones: []string{"us-west-2-pdx-1a", "us-west-2-wl1-sea-wlz-1"},
+		t.Run("with common wavelength zone format", func(t *testing.T) {
+			ic := validBYOSubnetsInstallConfig()
+			ic.Compute = append(ic.Compute, types.MachinePool{
+				Name: "edge",
+				Platform: types.MachinePoolPlatform{
+					AWS: &aws.MachinePool{
+						Zones: []string{"us-west-2-pdx-1a", "us-west-2-wl1-sea-wlz-1"},
+					},
 				},
-			},
+			})
+			requiredPerms := RequiredPermissionGroups(ic)
+			assert.Contains(t, requiredPerms, PermissionCarrierGateway)
+		})
+		// OCPBUGS-77355: for example, us-east-1-foe-wlz-1a
+		t.Run("with irregular wavelength zone format", func(t *testing.T) {
+			ic := validBYOSubnetsInstallConfig()
+			ic.Compute = append(ic.Compute, types.MachinePool{
+				Name: "edge",
+				Platform: types.MachinePoolPlatform{
+					AWS: &aws.MachinePool{
+						Zones: []string{"us-west-2-pdx-1a", "us-east-1-foe-wlz-1a", "eu-west-3-cmn-wlz-1a"},
+					},
+				},
+			})
+			requiredPerms := RequiredPermissionGroups(ic)
+			assert.Contains(t, requiredPerms, PermissionCarrierGateway)
 		})
-		requiredPerms := RequiredPermissionGroups(ic)
-		assert.Contains(t, requiredPerms, PermissionCarrierGateway)
 	})
 	t.Run("Should be false when", func(t *testing.T) {
 		t.Run("edge compute specified without WL zones", func(t *testing.T) {