diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7516090..0cce92f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -82,18 +82,18 @@ set(GRC_BLOCKS_DIR      ${GR_PKG_DATA_DIR}/grc/blocks)
 # Find gnuradio build dependencies
 ########################################################################
 set(GR_REQUIRED_COMPONENTS RUNTIME FILTER FFT PMT DIGITAL)
+
 find_package(Gnuradio)
-find_package(CppUnit)
-find_package(Log4cpp)
-
 if(NOT GNURADIO_RUNTIME_FOUND)
-    message(FATAL_ERROR "GnuRadio Runtime required to compile ieee802-11")
+    message(FATAL_ERROR "GNU Radio required to compile gr-ieee802-11")
 endif()
 
+find_package(CppUnit)
 if(NOT CPPUNIT_FOUND)
-    message(FATAL_ERROR "CppUnit required to compile ieee802-11")
+    message(FATAL_ERROR "CppUnit required to compile gr-ieee802-11")
 endif()
 
+find_package(Log4cpp)
 if (LOG4CPP_FOUND)
     message(STATUS "Found LOG4CPP: ${LOG4CPP_LIBRARIES}")
     add_definitions("-DGR_IEEE80211_LOG4CPP")
@@ -101,6 +101,11 @@ else ()
     message(STATUS "LOG4CPP not found (not required).")
 endif ()
 
+find_package(SWIG)
+if(NOT SWIG_FOUND)
+    message(FATAL_ERROR "SWIG required to compile gr-ieee802-11")
+endif()
+
 ########################################################################
 # On Apple only, set install name and use rpath correctly, if not already set
 ########################################################################