diff --git a/src/grovecollision/CMakeLists.txt b/src/grovecollision/CMakeLists.txt
index 0385ba0c..3dfd6173 100644
--- a/src/grovecollision/CMakeLists.txt
+++ b/src/grovecollision/CMakeLists.txt
@@ -2,4 +2,4 @@ set (libname "grovecollision")
 set (libdescription "Grovecollision sensor module")
 set (module_src ${libname}.cxx)
 set (module_hpp ${libname}.hpp)
-upm_module_init("-lrt")
+upm_module_init()
diff --git a/src/groveeldriver/CMakeLists.txt b/src/groveeldriver/CMakeLists.txt
index 9c1bddb9..abd966cd 100644
--- a/src/groveeldriver/CMakeLists.txt
+++ b/src/groveeldriver/CMakeLists.txt
@@ -2,4 +2,4 @@ set (libname "groveeldriver")
 set (libdescription "Groveeldriver sensor module")
 set (module_src ${libname}.cxx)
 set (module_hpp ${libname}.hpp)
-upm_module_init("-lrt")
+upm_module_init()
diff --git a/src/groveelectromagnet/CMakeLists.txt b/src/groveelectromagnet/CMakeLists.txt
index 83e29433..8d691844 100644
--- a/src/groveelectromagnet/CMakeLists.txt
+++ b/src/groveelectromagnet/CMakeLists.txt
@@ -2,4 +2,4 @@ set (libname "groveelectromagnet")
 set (libdescription "Groveelectromagnet sensor module")
 set (module_src ${libname}.cxx)
 set (module_hpp ${libname}.hpp)
-upm_module_init("-lrt")
+upm_module_init()
diff --git a/src/waterlevel/CMakeLists.txt b/src/waterlevel/CMakeLists.txt
index 93fd1439..f745a0af 100644
--- a/src/waterlevel/CMakeLists.txt
+++ b/src/waterlevel/CMakeLists.txt
@@ -2,4 +2,4 @@ set (libname "waterlevel")
 set (libdescription "Waterlevel sensor module")
 set (module_src ${libname}.cxx)
 set (module_hpp ${libname}.hpp)
-upm_module_init("-lrt")
+upm_module_init()