diff --git a/acinclude.m4 b/acinclude.m4
index 3a0e116e..43f27482 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -102,7 +102,7 @@ for exdir in $exdirs ; do
 		mylibdir="${exdir}/lib${subexdir}"
 		wi_EXTRA_LDIR($mylibdir)
 
-		progdir="${exdir}/bin${subexdirr}"
+		progdir="${exdir}/bin${subexdir}"
 		wi_EXTRA_PDIR($progdir)
 	fi
 done
diff --git a/configure.ac b/configure.ac
index 7ec4cff2..4b71bd5c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -240,6 +240,7 @@ fi
 AC_MSG_CHECKING(for proper simgear version)
 
 AC_TRY_RUN([
+#include <stdio.h>
 #include <simgear/version.h>
 
 #if !defined(SIMGEAR_VERSION)