diff --git a/src/gray_params.f90 b/src/gray_params.f90
index a875c26..365351f 100644
--- a/src/gray_params.f90
+++ b/src/gray_params.f90
@@ -153,7 +153,6 @@ contains
 #ifndef REVISION
     character(len=*), parameter :: REVISION="unknown"
 #endif
-    integer :: ierr
 
     ! Date and time
     call date_and_time(date, time)