diff --git a/CMakeLists.txt b/CMakeLists.txt
index 36fd6232..209c1ae4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -82,6 +82,9 @@ if(ENABLE_GDAL)
     find_package(GDAL) # build OGRDecode
 endif(ENABLE_GDAL)
 
+find_library(POCO_FOUNDATION PocoFoundation REQUIRED)
+find_library(POCO_NET PocoNet REQUIRED)
+
 check_include_file(unistd.h HAVE_UNISTD_H)
 check_include_file(sys/time.h HAVE_SYS_TIME_H)
 check_include_file(windows.h HAVE_WINDOWS_H)
diff --git a/src/Airports/GenAirports850/CMakeLists.txt b/src/Airports/GenAirports850/CMakeLists.txt
index f19daee7..d5a38cd5 100644
--- a/src/Airports/GenAirports850/CMakeLists.txt
+++ b/src/Airports/GenAirports850/CMakeLists.txt
@@ -25,8 +25,8 @@ target_link_libraries(genapts850
     Polygon Geometry
     Array Optimize Output poly2tri
     TriangleJRS
-    PocoFoundation
-    PocoNet
+    ${POCO_FOUNDATION}
+    ${POCO_NET}
     ${GDAL_LIBRARY}
 	${SIMGEAR_CORE_LIBRARIES}
 	${SIMGEAR_CORE_LIBRARY_DEPENDENCIES}