diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index e322b842b..31e3bb362 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -31,7 +31,6 @@ SET (SRCS
 	Cuboid.cpp
 	DeadlockDetect.cpp
 	Enchantments.cpp
-	FastRandom.cpp
 	FurnaceRecipe.cpp
 	Globals.cpp
 	Inventory.cpp
@@ -94,7 +93,6 @@ SET (HDRS
 	Defines.h
 	Enchantments.h
 	Endianness.h
-	FastRandom.h
 	ForEachChunkProvider.h
 	FurnaceRecipe.h
 	Globals.h
diff --git a/src/OSSupport/CMakeLists.txt b/src/OSSupport/CMakeLists.txt
index 45df0c1a3..29cf440ca 100644
--- a/src/OSSupport/CMakeLists.txt
+++ b/src/OSSupport/CMakeLists.txt
@@ -15,7 +15,7 @@ SET (SRCS
 	Semaphore.cpp
 	Socket.cpp
 	SocketThreads.cpp
-	Timer.cpp)
+)
 
 SET (HDRS
 	CriticalSection.h
@@ -29,7 +29,7 @@ SET (HDRS
 	Semaphore.h
 	Socket.h
 	SocketThreads.h
-	Timer.h)
+)
 
 if(NOT MSVC)
 	add_library(OSSupport ${SRCS} ${HDRS})