diff --git a/mlir/test/mlir-tblgen/op-interface.td b/mlir/test/mlir-tblgen/op-interface.td
--- a/mlir/test/mlir-tblgen/op-interface.td
+++ b/mlir/test/mlir-tblgen/op-interface.td
@@ -1,5 +1,6 @@
 // RUN: mlir-tblgen -gen-op-interface-decls -I %S/../../include %s | FileCheck %s --check-prefix=DECL
 // RUN: mlir-tblgen -gen-op-decls -I %S/../../include %s | FileCheck %s --check-prefix=OP_DECL
+// RUN: mlir-tblgen -gen-op-interface-docs -I %S/../../include %s | FileCheck %s --check-prefix=DOCS
 
 include "mlir/IR/OpBase.td"
 
@@ -31,6 +32,13 @@
       /*methodName=*/"foo",
       /*args=*/(ins "int":$input)
     >,
+    InterfaceMethod<
+      /*desc=*/[{some function comment}],
+      /*retTy=*/"int",
+      /*methodName=*/"body_foo",
+      /*args=*/(ins "int":$input),
+      /*body=*/[{ return 0; }]
+    >,
     InterfaceMethod<
       /*desc=*/[{some function comment}],
       /*retTy=*/"int",
@@ -93,3 +101,17 @@
 // OP_DECL-LABEL: class DeclareMethodsWithDefaultOp : public
 // OP_DECL: int foo(int input);
 // OP_DECL: int default_foo(int input);
+
+// DOCS-LABEL: {{^}}## TestOpInterface (`TestOpInterface`)
+// DOCS: some op interface description
+
+// DOCS: {{^}}### Methods:
+
+// DOCS: {{^}}#### `foo`
+// DOCS: some function comment
+
+// DOCS: {{^}}#### `body_foo`
+// DOCS: some function comment
+
+// DOCS: {{^}}#### `default_foo`
+// DOCS: some function comment
diff --git a/mlir/tools/mlir-tblgen/OpInterfacesGen.cpp b/mlir/tools/mlir-tblgen/OpInterfacesGen.cpp
--- a/mlir/tools/mlir-tblgen/OpInterfacesGen.cpp
+++ b/mlir/tools/mlir-tblgen/OpInterfacesGen.cpp
@@ -557,7 +557,9 @@
 
     // If the body is not provided, this method must be provided by the user.
     if (!method.getBody())
-      os << "\nNOTE: This method *must* be implemented by the user.\n\n";
+      os << "\nNOTE: This method *must* be implemented by the user.";
+
+    os << "\n\n";
   }
 }