diff --git a/eo/app/Makefile.am b/eo/app/Makefile.am
index 39553c1c7..650368343 100644
--- a/eo/app/Makefile.am
+++ b/eo/app/Makefile.am
@@ -4,7 +4,7 @@
 ##
 ###############################################################################
 
-SUBDIRS = mastermind gpsymreg gprop
+SUBDIRS = mastermind gpsymreg 
 
 ###############################################################################
 
diff --git a/eo/app/gprop/gprop.cpp b/eo/app/gprop/gprop.cpp
index dc17379a0..7758ec35b 100644
--- a/eo/app/gprop/gprop.cpp
+++ b/eo/app/gprop/gprop.cpp
@@ -1,6 +1,7 @@
 //-----------------------------------------------------------------------------
 // gprop
 //-----------------------------------------------------------------------------
+using namespace std;
 
 #include <stdlib.h>                // EXIT_SUCCESS EXIT_FAILURE
 #include <stdexcept>               // exception 
diff --git a/eo/configure.in b/eo/configure.in
index ed5513960..84f16aa9b 100644
--- a/eo/configure.in
+++ b/eo/configure.in
@@ -36,5 +36,5 @@ AC_TYPE_SIZE_T
 dnl Checks for library functions.
 AC_CHECK_FUNCS(select)
 
-AC_OUTPUT(doc/Makefile src/Makefile src/utils/Makefile src/other/Makefile win/Makefile src/gp/Makefile src/es/Makefile src/ga/Makefile test/Makefile contrib/Makefile Makefile app/Makefile app/gprop/Makefile app/mastermind/Makefile app/gpsymreg/Makefile src/do/Makefile)
-
+AC_OUTPUT(doc/Makefile src/Makefile src/utils/Makefile src/other/Makefile win/Makefile src/gp/Makefile src/es/Makefile src/ga/Makefile test/Makefile contrib/Makefile Makefile app/Makefile app/mastermind/Makefile app/gpsymreg/Makefile src/do/Makefile)
+#app/gprop/Makefile is in the sinbin