diff --git a/Dapper.Contrib/SqlMapperExtensions.Async.cs b/Dapper.Contrib/SqlMapperExtensions.Async.cs
index 35ca1077..b721c228 100644
--- a/Dapper.Contrib/SqlMapperExtensions.Async.cs
+++ b/Dapper.Contrib/SqlMapperExtensions.Async.cs
@@ -1,5 +1,4 @@
-#if ASYNC
-using System;
+using System;
 using System.Collections.Generic;
 using System.Data;
 using System.Linq;
@@ -532,4 +531,3 @@ public partial class FbAdapter
         return Convert.ToInt32(id);
     }
 }
-#endif
diff --git a/Dapper.Rainbow/Database.Async.cs b/Dapper.Rainbow/Database.Async.cs
index be63fa6e..06ab4756 100644
--- a/Dapper.Rainbow/Database.Async.cs
+++ b/Dapper.Rainbow/Database.Async.cs
@@ -1,5 +1,4 @@
-#if ASYNC
-using System;
+using System;
 using System.Collections.Generic;
 using System.Data;
 using System.Linq;
@@ -210,4 +209,3 @@ namespace Dapper
             SqlMapper.QueryMultipleAsync(_connection, sql, param, transaction, commandTimeout, commandType);
     }
 }
-#endif
\ No newline at end of file
diff --git a/Dapper.Tests/Providers/EntityFrameworkTests.cs b/Dapper.Tests/Providers/EntityFrameworkTests.cs
index 150492a6..1dbc26bf 100644
--- a/Dapper.Tests/Providers/EntityFrameworkTests.cs
+++ b/Dapper.Tests/Providers/EntityFrameworkTests.cs
@@ -11,8 +11,7 @@ namespace Dapper.Tests.Providers
         {
             EntityFramework.Handlers.Register();
         }
-
-#if ASYNC // TODO: Temp workaround in tests
+        
         [Fact]
         public void Issue570_DbGeo_HasValues()
         {
@@ -27,7 +26,6 @@ namespace Dapper.Tests.Providers
             Assert.NotNull(fromDb.Area);
             Assert.Equal(orig.Area, fromDb.Area);
         }
-#endif
 
         [Fact]
         public void Issue22_ExecuteScalar_EntityFramework()
diff --git a/Dapper/CommandDefinition.cs b/Dapper/CommandDefinition.cs
index 4e6518e4..110cd5b2 100644
--- a/Dapper/CommandDefinition.cs
+++ b/Dapper/CommandDefinition.cs
@@ -73,7 +73,6 @@ namespace Dapper
         /// </summary>
         public bool Pipelined => (Flags & CommandFlags.Pipelined) != 0;
 
-#if ASYNC
         /// <summary>
         /// Initialize the command definition
         /// </summary>
@@ -84,22 +83,9 @@ namespace Dapper
         /// <param name="commandType">The <see cref="CommandType"/> for this command.</param>
         /// <param name="flags">The behavior flags for this command.</param>
         /// <param name="cancellationToken">The cancellation token for this command.</param>
-#else
-        /// <summary>
-        /// Initialize the command definition
-        /// </summary>
-        /// <param name="commandText">The text for this command.</param>
-        /// <param name="parameters">The parameters for this command.</param>
-        /// <param name="transaction">The transaction for this command to participate in.</param>
-        /// <param name="commandTimeout">The timeout (in seconds) for this command.</param>
-        /// <param name="commandType">The <see cref="CommandType"/> for this command.</param>
-        /// <param name="flags">The behavior flags for this command.</param>
-#endif
         public CommandDefinition(string commandText, object parameters = null, IDbTransaction transaction = null, int? commandTimeout = null,
                                  CommandType? commandType = null, CommandFlags flags = CommandFlags.Buffered
-#if ASYNC
                                  , CancellationToken cancellationToken = default(CancellationToken)
-#endif
             )
         {
             CommandText = commandText;
@@ -108,9 +94,7 @@ namespace Dapper
             CommandTimeout = commandTimeout;
             CommandType = commandType;
             Flags = flags;
-#if ASYNC
             CancellationToken = cancellationToken;
-#endif
         }
 
         private CommandDefinition(object parameters) : this()
@@ -118,13 +102,10 @@ namespace Dapper
             Parameters = parameters;
         }
 
-#if ASYNC
-
         /// <summary>
         /// For asynchronous operations, the cancellation-token
         /// </summary>
         public CancellationToken CancellationToken { get; }
-#endif
 
         internal IDbCommand SetupCommand(IDbConnection cnn, Action<IDbCommand, object> paramReader)
         {
@@ -201,4 +182,4 @@ namespace Dapper
             return null;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/Dapper/SqlMapper.Async.cs b/Dapper/SqlMapper.Async.cs
index 5845b988..a705307a 100644
--- a/Dapper/SqlMapper.Async.cs
+++ b/Dapper/SqlMapper.Async.cs
@@ -1,5 +1,4 @@
-#if ASYNC
-using System;
+using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.Data;
@@ -1190,4 +1189,3 @@ namespace Dapper
         }
     }
 }
-#endif
\ No newline at end of file
diff --git a/Dapper/SqlMapper.GridReader.Async.cs b/Dapper/SqlMapper.GridReader.Async.cs
index c39f0551..89528826 100644
--- a/Dapper/SqlMapper.GridReader.Async.cs
+++ b/Dapper/SqlMapper.GridReader.Async.cs
@@ -1,5 +1,4 @@
-#if ASYNC
-using System;
+using System;
 using System.Collections.Generic;
 using System.Data;
 using System.Data.Common;
@@ -246,4 +245,3 @@ namespace Dapper
         }
     }
 }
-#endif
\ No newline at end of file
diff --git a/Dapper/SqlMapper.cs b/Dapper/SqlMapper.cs
index b4db316e..86f4f8ca 100644
--- a/Dapper/SqlMapper.cs
+++ b/Dapper/SqlMapper.cs
@@ -1,4 +1,4 @@
-/*
+/*
  License: http://www.apache.org/licenses/LICENSE-2.0
  Home page: https://github.com/StackExchange/dapper-dot-net
  */
@@ -516,13 +516,11 @@ namespace Dapper
             CacheInfo info = null;
             if (multiExec != null)
             {
-#if ASYNC
                 if((command.Flags & CommandFlags.Pipelined) != 0)
                 {
                     // this includes all the code for concurrent/overlapped query
                     return ExecuteMultiImplAsync(cnn, command, multiExec).Result;
                 }
-#endif
                 bool isFirst = true;
                 int total = 0;
                 bool wasClosed = cnn.State == ConnectionState.Closed;
@@ -3693,4 +3691,4 @@ namespace Dapper
             return s;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/Directory.build.props b/Directory.build.props
index 776838ac..ce63460a 100644
--- a/Directory.build.props
+++ b/Directory.build.props
@@ -26,10 +26,6 @@
     <Reference Include="System.Core" Pack="false" />
   </ItemGroup>
   
-  <PropertyGroup Condition=" '$(TargetFramework)' != 'net40'">
-    <DefineConstants>$(DefineConstants);ASYNC</DefineConstants>
-  </PropertyGroup>
-  
   <ItemGroup>
     <PackageReference Include="SourceLink.Create.GitHub" Version="2.1.2" PrivateAssets="All" /> 
     <DotNetCliToolReference Include="dotnet-sourcelink" Version="2.1.2" />