diff --git a/clang/lib/AST/ASTImporter.cpp b/clang/lib/AST/ASTImporter.cpp
--- a/clang/lib/AST/ASTImporter.cpp
+++ b/clang/lib/AST/ASTImporter.cpp
@@ -8583,6 +8583,13 @@
     break;
   }
 
+  case attr::EnableIf: {
+    const auto *From = cast<EnableIfAttr>(FromAttr);
+    AI.importAttr(From, AI.importArg(From->getCond()).value(),
+                  From->getMessage());
+    break;
+  }
+
   case attr::AssertCapability: {
     const auto *From = cast<AssertCapabilityAttr>(FromAttr);
     AI.importAttr(From,
diff --git a/clang/unittests/AST/ASTImporterTest.cpp b/clang/unittests/AST/ASTImporterTest.cpp
--- a/clang/unittests/AST/ASTImporterTest.cpp
+++ b/clang/unittests/AST/ASTImporterTest.cpp
@@ -6634,6 +6634,15 @@
   EXPECT_EQ(FromAttr->getType()->getName(), ToAttr->getType()->getName());
 }
 
+TEST_P(ImportAttributes, ImportEnableIf) {
+  EnableIfAttr *FromAttr, *ToAttr;
+  importAttr<FunctionDecl>(
+      "void test(int A) __attribute__((enable_if(A == 1, \"message\")));",
+      FromAttr, ToAttr);
+  checkImported(FromAttr->getCond(), ToAttr->getCond());
+  EXPECT_EQ(FromAttr->getMessage(), ToAttr->getMessage());
+}
+
 TEST_P(ImportAttributes, ImportGuardedVar) {
   GuardedVarAttr *FromAttr, *ToAttr;
   importAttr<VarDecl>("int test __attribute__((guarded_var));", FromAttr,