diff --git a/CMakeLists.txt b/CMakeLists.txt
index 03511a49b..5001fa163 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -162,6 +162,7 @@ if(PHRQC_USE_GMP)
 endif()
 
 option(PHRQC_TESTING "Set TESTING preprocessor definition" OFF)
+option(PHRQC_ENABLE_REGRESSION_TESTING "When TESTING, enable tests that take longer to run" OFF)
 
 if(MSVC)
 
diff --git a/mytest/CMakeLists.txt b/mytest/CMakeLists.txt
index 52497eb24..f89d795da 100644
--- a/mytest/CMakeLists.txt
+++ b/mytest/CMakeLists.txt
@@ -599,7 +599,7 @@ set(H2S_FILES
 )
 
 # label current
-# ctest -L pitzer
+# ctest -L current
 set(CURRENT
   #mytest.Clogging
   mytest.current_analytical
@@ -837,3 +837,9 @@ if (NUMDIFF_COMMAND)
     # endif()
   endforeach()
 endif()
+
+if (NOT PHRQC_ENABLE_REGRESSION_TESTING)
+  foreach(test ${LONG_DEBUG})
+    set_tests_properties(${test} PROPERTIES DISABLED TRUE)
+  endforeach()
+endif()