diff --git a/src/Perspex.Application/Perspex.Application.csproj b/src/Perspex.Application/Perspex.Application.csproj
index be9c29e1c7..bbafdcf1a7 100644
--- a/src/Perspex.Application/Perspex.Application.csproj
+++ b/src/Perspex.Application/Perspex.Application.csproj
@@ -27,6 +27,7 @@
prompt
4
bin\Debug\Perspex.Application.XML
+ CS1591
pdbonly
diff --git a/src/Perspex.Base/Perspex.Base.csproj b/src/Perspex.Base/Perspex.Base.csproj
index deeb85a600..733d8cc69e 100644
--- a/src/Perspex.Base/Perspex.Base.csproj
+++ b/src/Perspex.Base/Perspex.Base.csproj
@@ -27,6 +27,7 @@
prompt
4
bin\Debug\Perspex.Base.XML
+ CS1591
pdbonly
diff --git a/src/Perspex.Controls/Perspex.Controls.csproj b/src/Perspex.Controls/Perspex.Controls.csproj
index 2682d76d16..9270658e51 100644
--- a/src/Perspex.Controls/Perspex.Controls.csproj
+++ b/src/Perspex.Controls/Perspex.Controls.csproj
@@ -27,6 +27,7 @@
prompt
4
bin\Debug\Perspex.Controls.XML
+ CS1591
pdbonly
diff --git a/src/Perspex.Diagnostics/Perspex.Diagnostics.csproj b/src/Perspex.Diagnostics/Perspex.Diagnostics.csproj
index 98fff81ad5..17db490d9b 100644
--- a/src/Perspex.Diagnostics/Perspex.Diagnostics.csproj
+++ b/src/Perspex.Diagnostics/Perspex.Diagnostics.csproj
@@ -27,6 +27,7 @@
prompt
4
bin\Debug\Perspex.Diagnostics.XML
+ CS1591
pdbonly
diff --git a/src/Perspex.Input/Perspex.Input.csproj b/src/Perspex.Input/Perspex.Input.csproj
index c853ea9bb1..babd0e034b 100644
--- a/src/Perspex.Input/Perspex.Input.csproj
+++ b/src/Perspex.Input/Perspex.Input.csproj
@@ -27,6 +27,7 @@
prompt
4
bin\Debug\Perspex.Input.XML
+ CS1591
pdbonly
diff --git a/src/Perspex.Interactivity/Perspex.Interactivity.csproj b/src/Perspex.Interactivity/Perspex.Interactivity.csproj
index c67efb6c11..79e4820236 100644
--- a/src/Perspex.Interactivity/Perspex.Interactivity.csproj
+++ b/src/Perspex.Interactivity/Perspex.Interactivity.csproj
@@ -27,6 +27,7 @@
prompt
4
bin\Debug\Perspex.Interactivity.XML
+ CS1591
pdbonly
diff --git a/src/Perspex.SceneGraph/Perspex.SceneGraph.csproj b/src/Perspex.SceneGraph/Perspex.SceneGraph.csproj
index 776589de81..a6c4f6da14 100644
--- a/src/Perspex.SceneGraph/Perspex.SceneGraph.csproj
+++ b/src/Perspex.SceneGraph/Perspex.SceneGraph.csproj
@@ -27,6 +27,7 @@
prompt
4
bin\Debug\Perspex.SceneGraph.XML
+ CS1591
pdbonly
diff --git a/src/Perspex.Styling/Perspex.Styling.csproj b/src/Perspex.Styling/Perspex.Styling.csproj
index a8e997821e..c741543430 100644
--- a/src/Perspex.Styling/Perspex.Styling.csproj
+++ b/src/Perspex.Styling/Perspex.Styling.csproj
@@ -27,6 +27,7 @@
prompt
4
bin\Debug\Perspex.Styling.XML
+ CS1591
pdbonly
diff --git a/src/Windows/Perspex.Direct2D1/Perspex.Direct2D1.csproj b/src/Windows/Perspex.Direct2D1/Perspex.Direct2D1.csproj
index 38e9b9ed8e..924d90927b 100644
--- a/src/Windows/Perspex.Direct2D1/Perspex.Direct2D1.csproj
+++ b/src/Windows/Perspex.Direct2D1/Perspex.Direct2D1.csproj
@@ -23,6 +23,7 @@
prompt
4
bin\Debug\Perspex.Direct2D1.XML
+ CS1591
pdbonly
diff --git a/src/Windows/Perspex.Win32/Perspex.Win32.csproj b/src/Windows/Perspex.Win32/Perspex.Win32.csproj
index 29adac0267..fab4e69617 100644
--- a/src/Windows/Perspex.Win32/Perspex.Win32.csproj
+++ b/src/Windows/Perspex.Win32/Perspex.Win32.csproj
@@ -24,6 +24,7 @@
4
bin\Debug\Perspex.Win32.XML
true
+ CS1591
pdbonly