diff --git a/cmake/Modules/FindPythia6.cmake b/cmake/Modules/FindPythia6.cmake
index 110e934aa14..b4f115bfaf0 100644
--- a/cmake/Modules/FindPythia6.cmake
+++ b/cmake/Modules/FindPythia6.cmake
@@ -4,9 +4,17 @@
 # Defines:
 #  PYTHIA6_FOUND
 #  PYTHIA6_LIBRARIES
+set(TEST_PYTHIA6_ROOT_DIR  "" ${PYTHIA6_ROOT_DIR})
+IF(TEST_PYTHIA6_ROOT_DIR STREQUAL "")
+  IF(DEFINED ENV{PYTHIA6_ROOT_DIR})
+    set(PYTHIA6_ROOT_DIR  $ENV{PYTHIA6_ROOT_DIR})
+  else()
+    set(PYTHIA6_ROOT_DIR  "/usr")
+  endif()
+endif()
 
-find_library(PYTHIA6_LIBRARY NAMES Pythia6 pythia6-$ENV{PYTHIA6_VERSION}
-			     HINTS $ENV{PYTHIA6} $ENV{PYTHIA6}/lib)
+find_library(PYTHIA6_LIBRARY NAMES Pythia6 pythia6 pythia6-$ENV{PYTHIA6_VERSION}
+			     HINTS $ENV{PYTHIA6} $ENV{PYTHIA6}/lib $ENV{PYTHIA6}/lib64 ${PYTHIA6_ROOT_DIR}/lib ${PYTHIA6_ROOT_DIR}/lib64)
 
 set(PYTHIA6_LIBRARIES ${PYTHIA6_LIBRARY})                              
 #message(STATUS PYTHIA6_LIBRARIES ${PYTHIA6_LIBRARIES} )