diff --git a/exercises/exercise-biomineralization/CMakeLists.txt b/exercises/exercise-biomineralization/CMakeLists.txt
index aa182c158d591d41df204b4bda2b97f5141345a4..cc68a96fab0068a8af5f048dc37a830fac2455e0 100644
--- a/exercises/exercise-biomineralization/CMakeLists.txt
+++ b/exercises/exercise-biomineralization/CMakeLists.txt
@@ -1,6 +1,7 @@
 # executables for exercisebiomin
 dune_add_test(NAME exercisebiomin
-              SOURCES exercisebiomin.cc)
+              SOURCES exercisebiomin.cc
+              CMD_ARGS -TimeLoop.TEnd 1e5)
 
 # add tutorial to the common target
 add_dependencies(test_exercises exercisebiomin)
diff --git a/exercises/solution/exercise-biomineralization/CMakeLists.txt b/exercises/solution/exercise-biomineralization/CMakeLists.txt
index b39f30e00987adfe1a70ab2b1d7c696a85d4fd09..8b7419911798eba22bb4007de2de2116016ab1cf 100644
--- a/exercises/solution/exercise-biomineralization/CMakeLists.txt
+++ b/exercises/solution/exercise-biomineralization/CMakeLists.txt
@@ -1,6 +1,7 @@
 # executables for exercisebiomin
 dune_add_test(NAME exercisebiomin_solution
-              SOURCES exercisebiomin.cc)
+              SOURCES exercisebiomin.cc
+              CMD_ARGS -TimeLoop.TEnd 1e5)
 
 # add tutorial to the common target
 add_dependencies(test_exercises exercisebiomin_solution)