diff --git a/cli/compose/loader/loader.go b/cli/compose/loader/loader.go
index dda62f862eaa..b8f725cb1a9e 100644
--- a/cli/compose/loader/loader.go
+++ b/cli/compose/loader/loader.go
@@ -322,26 +322,26 @@ type Transformer struct {
 
 func createTransformHook(additionalTransformers ...Transformer) mapstructure.DecodeHookFuncType {
 	transforms := map[reflect.Type]func(any) (any, error){
-		reflect.TypeOf(types.External{}):                         transformExternal,
-		reflect.TypeOf(types.HealthCheckTest{}):                  transformHealthCheckTest,
-		reflect.TypeOf(types.ShellCommand{}):                     transformShellCommand,
-		reflect.TypeOf(types.StringList{}):                       transformStringList,
-		reflect.TypeOf(map[string]string{}):                      transformMapStringString,
-		reflect.TypeOf(types.UlimitsConfig{}):                    transformUlimits,
-		reflect.TypeOf(types.UnitBytes(0)):                       transformSize,
-		reflect.TypeOf([]types.ServicePortConfig{}):              transformServicePort,
-		reflect.TypeOf(types.ServiceSecretConfig{}):              transformStringSourceMap,
-		reflect.TypeOf(types.ServiceConfigObjConfig{}):           transformStringSourceMap,
-		reflect.TypeOf(types.StringOrNumberList{}):               transformStringOrNumberList,
-		reflect.TypeOf(map[string]*types.ServiceNetworkConfig{}): transformServiceNetworkMap,
-		reflect.TypeOf(types.Mapping{}):                          transformMappingOrListFunc("=", false),
-		reflect.TypeOf(types.MappingWithEquals{}):                transformMappingOrListFunc("=", true),
-		reflect.TypeOf(types.Labels{}):                           transformMappingOrListFunc("=", false),
-		reflect.TypeOf(types.MappingWithColon{}):                 transformMappingOrListFunc(":", false),
-		reflect.TypeOf(types.HostsList{}):                        transformHostsList,
-		reflect.TypeOf(types.ServiceVolumeConfig{}):              transformServiceVolumeConfig,
-		reflect.TypeOf(types.BuildConfig{}):                      transformBuildConfig,
-		reflect.TypeOf(types.Duration(0)):                        transformStringToDuration,
+		reflect.TypeFor[types.External]():                         transformExternal,
+		reflect.TypeFor[types.HealthCheckTest]():                  transformHealthCheckTest,
+		reflect.TypeFor[types.ShellCommand]():                     transformShellCommand,
+		reflect.TypeFor[types.StringList]():                       transformStringList,
+		reflect.TypeFor[map[string]string]():                      transformMapStringString,
+		reflect.TypeFor[types.UlimitsConfig]():                    transformUlimits,
+		reflect.TypeFor[types.UnitBytes]():                        transformSize,
+		reflect.TypeFor[[]types.ServicePortConfig]():              transformServicePort,
+		reflect.TypeFor[types.ServiceSecretConfig]():              transformStringSourceMap,
+		reflect.TypeFor[types.ServiceConfigObjConfig]():           transformStringSourceMap,
+		reflect.TypeFor[types.StringOrNumberList]():               transformStringOrNumberList,
+		reflect.TypeFor[map[string]*types.ServiceNetworkConfig](): transformServiceNetworkMap,
+		reflect.TypeFor[types.Mapping]():                          transformMappingOrListFunc("=", false),
+		reflect.TypeFor[types.MappingWithEquals]():                transformMappingOrListFunc("=", true),
+		reflect.TypeFor[types.Labels]():                           transformMappingOrListFunc("=", false),
+		reflect.TypeFor[types.MappingWithColon]():                 transformMappingOrListFunc(":", false),
+		reflect.TypeFor[types.HostsList]():                        transformHostsList,
+		reflect.TypeFor[types.ServiceVolumeConfig]():              transformServiceVolumeConfig,
+		reflect.TypeFor[types.BuildConfig]():                      transformBuildConfig,
+		reflect.TypeFor[types.Duration]():                         transformStringToDuration,
 	}
 
 	for _, transformer := range additionalTransformers {
diff --git a/cli/compose/loader/merge.go b/cli/compose/loader/merge.go
index a321fd18c489..0aa61fad4673 100644
--- a/cli/compose/loader/merge.go
+++ b/cli/compose/loader/merge.go
@@ -56,15 +56,15 @@ func mergeServices(base, override []types.ServiceConfig) ([]types.ServiceConfig,
 	overrideServices := mapByName(override)
 	specials := &specials{
 		m: map[reflect.Type]func(dst, src reflect.Value) error{
-			reflect.TypeOf(&types.LoggingConfig{}):           safelyMerge(mergeLoggingConfig),
-			reflect.TypeOf([]types.ServicePortConfig{}):      mergeSlice(toServicePortConfigsMap, toServicePortConfigsSlice),
-			reflect.TypeOf([]types.ServiceSecretConfig{}):    mergeSlice(toServiceSecretConfigsMap, toServiceSecretConfigsSlice),
-			reflect.TypeOf([]types.ServiceConfigObjConfig{}): mergeSlice(toServiceConfigObjConfigsMap, toSServiceConfigObjConfigsSlice),
-			reflect.TypeOf(&types.UlimitsConfig{}):           mergeUlimitsConfig,
-			reflect.TypeOf([]types.ServiceVolumeConfig{}):    mergeSlice(toServiceVolumeConfigsMap, toServiceVolumeConfigsSlice),
-			reflect.TypeOf(types.ShellCommand{}):             mergeShellCommand,
-			reflect.TypeOf(&types.ServiceNetworkConfig{}):    mergeServiceNetworkConfig,
-			reflect.PointerTo(reflect.TypeOf(uint64(1))):     mergeUint64,
+			reflect.PointerTo(reflect.TypeFor[types.LoggingConfig]()):        safelyMerge(mergeLoggingConfig),
+			reflect.TypeFor[[]types.ServicePortConfig]():                     mergeSlice(toServicePortConfigsMap, toServicePortConfigsSlice),
+			reflect.TypeFor[[]types.ServiceSecretConfig]():                   mergeSlice(toServiceSecretConfigsMap, toServiceSecretConfigsSlice),
+			reflect.TypeFor[[]types.ServiceConfigObjConfig]():                mergeSlice(toServiceConfigObjConfigsMap, toSServiceConfigObjConfigsSlice),
+			reflect.PointerTo(reflect.TypeFor[types.UlimitsConfig]()):        mergeUlimitsConfig,
+			reflect.TypeFor[[]types.ServiceVolumeConfig]():                   mergeSlice(toServiceVolumeConfigsMap, toServiceVolumeConfigsSlice),
+			reflect.TypeFor[types.ShellCommand]():                            mergeShellCommand,
+			reflect.PointerTo(reflect.TypeFor[types.ServiceNetworkConfig]()): mergeServiceNetworkConfig,
+			reflect.PointerTo(reflect.TypeFor[uint64]()):                     mergeUint64,
 		},
 	}
 	for name, overrideService := range overrideServices {
@@ -77,7 +77,7 @@ func mergeServices(base, override []types.ServiceConfig) ([]types.ServiceConfig,
 		}
 		baseServices[name] = overrideService
 	}
-	services := []types.ServiceConfig{}
+	services := make([]types.ServiceConfig, 0, len(baseServices))
 	for _, baseService := range baseServices {
 		services = append(services, baseService)
 	}