diff --git a/src/tests/CMakeLists.txt b/src/tests/CMakeLists.txt
index fc1f39e9e..05463c5dc 100644
--- a/src/tests/CMakeLists.txt
+++ b/src/tests/CMakeLists.txt
@@ -43,7 +43,7 @@ EkatCreateUnitTest(mam4_rename_unit_tests mam4_rename_unit_tests.cpp
   LIBS mam4xx_tests ${HAERO_LIBRARIES} EXCLUDE_TEST_SESSION)
 EkatCreateUnitTest(mam4_aging_unit_tests mam4_aging_unit_tests.cpp
   LIBS mam4xx_tests ${HAERO_LIBRARIES} EXCLUDE_TEST_SESSION)
-EkatCreateUnitTest(mam4_hetfrz_unit_tests mam4_hetfrz_unit_tests.cpp  
+EkatCreateUnitTest(mam4_hetfrz_unit_tests mam4_hetfrz_unit_tests.cpp
   LIBS mam4xx_tests ${HAERO_LIBRARIES} EXCLUDE_TEST_SESSION)
 EkatCreateUnitTest(mam4_amicphys_1gridcell_tests mam4_amicphys_1gridcell.cpp
   LIBS mam4xx_tests ${HAERO_LIBRARIES} EXCLUDE_TEST_SESSION)