diff --git a/src/algorithms/output_filter/adapters/CMakeLists.txt b/src/algorithms/output_filter/adapters/CMakeLists.txt
index b07d81819..a0c1c4890 100644
--- a/src/algorithms/output_filter/adapters/CMakeLists.txt
+++ b/src/algorithms/output_filter/adapters/CMakeLists.txt
@@ -26,6 +26,7 @@ include_directories(
      ${CMAKE_SOURCE_DIR}/src/core/interfaces
      ${CMAKE_SOURCE_DIR}/src/core/receiver
      ${GLOG_INCLUDE_DIRS}
+     ${GFlags_INCLUDE_DIRS}
      ${GNURADIO_RUNTIME_INCLUDE_DIRS}
 )
 
diff --git a/src/algorithms/resampler/adapters/CMakeLists.txt b/src/algorithms/resampler/adapters/CMakeLists.txt
index a41a147fe..c5a634f5d 100644
--- a/src/algorithms/resampler/adapters/CMakeLists.txt
+++ b/src/algorithms/resampler/adapters/CMakeLists.txt
@@ -23,6 +23,7 @@ include_directories(
      ${CMAKE_SOURCE_DIR}/src/core/interfaces
      ${CMAKE_SOURCE_DIR}/src/algorithms/resampler/gnuradio_blocks
      ${GLOG_INCLUDE_DIRS}
+     ${GFlags_INCLUDE_DIRS}
      ${GNURADIO_RUNTIME_INCLUDE_DIRS}
 )
 
diff --git a/src/algorithms/resampler/gnuradio_blocks/CMakeLists.txt b/src/algorithms/resampler/gnuradio_blocks/CMakeLists.txt
index fce242d27..1be880f29 100644
--- a/src/algorithms/resampler/gnuradio_blocks/CMakeLists.txt
+++ b/src/algorithms/resampler/gnuradio_blocks/CMakeLists.txt
@@ -25,6 +25,7 @@ set(RESAMPLER_GR_BLOCKS_SOURCES
 include_directories(
      $(CMAKE_CURRENT_SOURCE_DIR)
      ${GLOG_INCLUDE_DIRS}
+     ${GFlags_INCLUDE_DIRS}
      ${GNURADIO_RUNTIME_INCLUDE_DIRS}
 )
 
diff --git a/src/algorithms/signal_source/adapters/CMakeLists.txt b/src/algorithms/signal_source/adapters/CMakeLists.txt
index a3227a95a..23e328016 100644
--- a/src/algorithms/signal_source/adapters/CMakeLists.txt
+++ b/src/algorithms/signal_source/adapters/CMakeLists.txt
@@ -84,10 +84,9 @@ include_directories(
      ${CMAKE_SOURCE_DIR}/src/core/interfaces
      ${CMAKE_SOURCE_DIR}/src/algorithms/libs
      ${UHD_INCLUDE_DIRS}
-     ${GFlags_INCLUDE_DIRS}
-     ${Boost_INCLUDE_DIRS}
-     ${GFlags_INCLUDE_DIRS}
      ${GLOG_INCLUDE_DIRS}
+     ${GFlags_INCLUDE_DIRS}     
+     ${Boost_INCLUDE_DIRS}
 )
 
 add_library(signal_source_adapters ${SIGNAL_SOURCE_ADAPTER_SOURCES})