diff --git a/ortools/math_opt/solvers/CMakeLists.txt b/ortools/math_opt/solvers/CMakeLists.txt
index f5497263c5..629cd3913f 100644
--- a/ortools/math_opt/solvers/CMakeLists.txt
+++ b/ortools/math_opt/solvers/CMakeLists.txt
@@ -15,6 +15,8 @@ set(NAME ${PROJECT_NAME}_math_opt_solvers)
 add_library(${NAME} OBJECT)
 
 file(GLOB_RECURSE _SRCS "*.h" "*.cc")
+list(FILTER _SRCS EXCLUDE REGEX ".*/.*_test.cc")
+
 if(NOT USE_GLPK)
   list(FILTER _SRCS EXCLUDE REGEX "/glpk/")
   list(FILTER _SRCS EXCLUDE REGEX "/glpk_.*.h$")