diff --git a/tests/tests.vcxproj b/tests/tests.vcxproj
index 858c4113..f05c1628 100644
--- a/tests/tests.vcxproj
+++ b/tests/tests.vcxproj
@@ -71,6 +71,7 @@
Level3
Disabled
true
+ $(SolutionDir)\..\include;%(AdditionalIncludeDirectories)
true
@@ -97,6 +98,7 @@
true
true
true
+ $(SolutionDir)\..\include;%(AdditionalIncludeDirectories)
true