diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index aebb3dee8..c8397b4ee 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -14,7 +14,7 @@ colormsg(_HIBLUE_ "Configuring SOCI tests:")
 # This works around a problem when building in C++11 mode with clang (see #984).
 add_definitions(-DCATCH_CONFIG_CPP11_NO_SHUFFLE)
 
-if(NOT MSVC)
+if(MSVC)
   add_compile_options(/bigobj)
 endif()