diff --git a/utils/GPSsmooth/CMakeLists.txt b/utils/GPSsmooth/CMakeLists.txt
index 56ed1b463..453e2369c 100644
--- a/utils/GPSsmooth/CMakeLists.txt
+++ b/utils/GPSsmooth/CMakeLists.txt
@@ -15,6 +15,7 @@ target_link_libraries(GPSsmooth
 	${WINMM_LIBRARY}
 	${WINSOCK_LIBRARY}
 	${ZLIB_LIBRARIES}
+  ${OPENTHREADS_LIBRARIES}
 	${RT_LIBRARY}
 )
 
@@ -25,6 +26,7 @@ target_link_libraries(MIDGsmooth
 	${SIMGEAR_STRUCTURE_LIBRARY}
 	${SIMGEAR_TIMING_LIBRARY}
 	${SIMGEAR_DEBUG_LIBRARY}
+  ${OPENTHREADS_LIBRARIES}
 	${PLIB_SG_LIBRARY}
 	${PLIB_UL_LIBRARY}
 	${WINMM_LIBRARY}
@@ -40,6 +42,7 @@ target_link_libraries(UGsmooth
 	${SIMGEAR_SERIAL_LIBRARY}
 	${SIMGEAR_STRUCTURE_LIBRARY}
 	${SIMGEAR_TIMING_LIBRARY}
+  ${OPENTHREADS_LIBRARIES}
 	${PLIB_SG_LIBRARY}
 	${PLIB_UL_LIBRARY}
 	${WINMM_LIBRARY}
diff --git a/utils/TerraSync/CMakeLists.txt b/utils/TerraSync/CMakeLists.txt
index 88b208c16..25c01f084 100644
--- a/utils/TerraSync/CMakeLists.txt
+++ b/utils/TerraSync/CMakeLists.txt
@@ -4,6 +4,7 @@ add_executable(terrasync terrasync.cxx)
 
 target_link_libraries(terrasync 
 	${SIMGEAR_LIBRARIES}
+  ${OPENTHREADS_LIBRARIES}
 	${ZLIB_LIBRARIES}
     ${WINSOCK_LIBRARY})
 
diff --git a/utils/fgpanel/CMakeLists.txt b/utils/fgpanel/CMakeLists.txt
index 8abc896e7..3595bf164 100644
--- a/utils/fgpanel/CMakeLists.txt
+++ b/utils/fgpanel/CMakeLists.txt
@@ -20,6 +20,7 @@ if(GLUT_FOUND)
 		${PNG_LIBRARIES}
 		${GLUT_LIBRARIES}
 		${SIMGEAR_LIBRARIES}
+    ${OPENTHREADS_LIBRARIES}
 		${OPENGL_LIBRARIES}
 		${ZLIB_LIBRARIES}
 		${PLIB_LIBRARIES}