diff --git a/common/include/villas/kernel/rt.hpp b/common/include/villas/kernel/rt.hpp
index a3f4ebf3c..5ac32bf87 100644
--- a/common/include/villas/kernel/rt.hpp
+++ b/common/include/villas/kernel/rt.hpp
@@ -38,8 +38,6 @@ int setAffinity(int affinity);
 
 int setPriority(int priority);
 
-int lockMemory();
-
 /** Checks for realtime (PREEMPT_RT) patched kernel.
  *
  * See https://rt.wiki.kernel.org
diff --git a/common/lib/kernel/rt.cpp b/common/lib/kernel/rt.cpp
index bb21b9995..773509324 100644
--- a/common/lib/kernel/rt.cpp
+++ b/common/lib/kernel/rt.cpp
@@ -78,19 +78,6 @@ int init(int priority, int affinity)
 
 #ifdef __linux__
 
-int lockMemory()
-{
-	int ret;
-
-#ifdef _POSIX_MEMLOCK
-	ret = mlockall(MCL_CURRENT | MCL_FUTURE);
-	if (ret)
-		throw SystemError("Failed to lock memory");
-#endif
-
-	return 0;
-}
-
 int setAffinity(int affinity)
 {
 	char isolcpus[255];