diff --git a/configure b/configure
index dc07597b..d349ef30 100755
--- a/configure
+++ b/configure
@@ -600,7 +600,7 @@ PACKAGE_VERSION='3.0'
 PACKAGE_STRING='PSBLAS 3.0'
 PACKAGE_BUGREPORT='salvatore.filippone@uniroma2.it'
 
-ac_unique_file="base/modules/psb_base_mod.f90"
+ac_unique_file="base/modules/psb_sparse_mod.f90"
 # Factoring default headers for most tests.
 ac_includes_default="\
 #include <stdio.h>
diff --git a/configure.ac b/configure.ac
index b5440245..18646e63 100755
--- a/configure.ac
+++ b/configure.ac
@@ -43,7 +43,7 @@ AC_INIT([PSBLAS],3.0, salvatore.filippone@uniroma2.it)
 psblas_cv_version="3.0"
 
 # A sample source file
-AC_CONFIG_SRCDIR([base/modules/psb_base_mod.f90])
+AC_CONFIG_SRCDIR([base/modules/psb_sparse_mod.f90])
 dnl AC_CONFIG_AUX_DIR(config)
 
 # Our custom M4 macros are in the 'config' directory