diff --git a/Dapper.Contrib/project.json b/Dapper.Contrib/project.json
index 464d56db0..5bb9a3169 100644
--- a/Dapper.Contrib/project.json
+++ b/Dapper.Contrib/project.json
@@ -24,7 +24,7 @@
   "buildOptions": {
     "warningsAsErrors": true,
     "compile": {
-      "include:": [
+      "include": [
         "**/*.cs"
       ],
       "includeFiles": [
diff --git a/Dapper.Rainbow/project.json b/Dapper.Rainbow/project.json
index 772d72a18..861f9b90d 100644
--- a/Dapper.Rainbow/project.json
+++ b/Dapper.Rainbow/project.json
@@ -24,7 +24,7 @@
   "buildOptions": {
     "warningsAsErrors": true,
     "compile": {
-      "include:": [
+      "include": [
         "**/*.cs"
       ],
       "includeFiles": [
diff --git a/Dapper.Tests.Contrib/project.json b/Dapper.Tests.Contrib/project.json
index 1cfbaa447..78b8c4d44 100644
--- a/Dapper.Tests.Contrib/project.json
+++ b/Dapper.Tests.Contrib/project.json
@@ -33,7 +33,7 @@
     "emitEntryPoint": true,
     "debugType": "portable",
     "compile": {
-      "include:": [
+      "include": [
         "**/*.cs"
       ],
       "includeFiles": [