diff --git a/CMakeLists.txt b/CMakeLists.txt
index 16a6dab7..7e52ca73 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -193,14 +193,14 @@ endif()
 set(RAGEL_C_FLAGS "-Wno-unused -funsigned-char")
 
 set_source_files_properties(
-    ${CMAKE_BINARY_DIR}/src/parser/Parser.cpp
+    src/parser/Parser.cpp
     PROPERTIES
         COMPILE_FLAGS "${RAGEL_C_FLAGS}")
 
 ragelmaker(src/parser/Parser.rl)
 
 set_source_files_properties(
-    ${CMAKE_BINARY_DIR}/src/parser/control_verbs.cpp
+   src/parser/control_verbs.cpp
     PROPERTIES
         COMPILE_FLAGS "${RAGEL_C_FLAGS}")
 
diff --git a/tools/hscollider/CMakeLists.txt b/tools/hscollider/CMakeLists.txt
index d1ffc49a..f9e71404 100644
--- a/tools/hscollider/CMakeLists.txt
+++ b/tools/hscollider/CMakeLists.txt
@@ -17,7 +17,7 @@ CHECK_FUNCTION_EXISTS(sigaction HAVE_SIGACTION)
 CHECK_FUNCTION_EXISTS(setrlimit HAVE_SETRLIMIT)
 
 set_source_files_properties(
-    ${CMAKE_CURRENT_BINARY_DIR}/ColliderCorporaParser.cpp
+    ColliderCorporaParser.cpp
     PROPERTIES
     COMPILE_FLAGS "${RAGEL_C_FLAGS} -I${CMAKE_CURRENT_SOURCE_DIR}")
 
diff --git a/util/CMakeLists.txt b/util/CMakeLists.txt
index 214da90c..97fd4c7d 100644
--- a/util/CMakeLists.txt
+++ b/util/CMakeLists.txt
@@ -9,7 +9,7 @@ include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR}
 message("RAGEL_C_FLAGS" ${RAGEL_C_FLAGS})
 
 set_source_files_properties(
-    ${CMAKE_BINARY_DIR}/util/ExpressionParser.cpp
+    ExpressionParser.cpp
     PROPERTIES
     COMPILE_FLAGS "${RAGEL_C_FLAGS}")