diff -Nur scilab-5.3.3.orig/configure.ac scilab-5.3.3/configure.ac
--- scilab-5.3.3.orig/configure.ac	2012-04-16 21:18:43.000000000 +0100
+++ scilab-5.3.3/configure.ac	2012-05-14 19:27:21.000000000 +0100
@@ -1514,7 +1514,7 @@
    CFLAGS="$CFLAGS $MATIO_CFLAGS"
    LIBS="$LIBS $MATIO_LIBS"
 
-   AC_CHECK_HEADERS([matio.h matioConfig.h], [],
+   AC_CHECK_HEADERS([matio.h], [],
      [AC_MSG_ERROR([Invalid MATIO_CFLAGS returned by pkg-config. Try to define MATIO_CFLAGS.])])
    AC_CHECK_LIB([matio], [Mat_Open], [],
      [AC_MSG_ERROR([Invalid MATIO_LIBS returned by pkg-config. Try to define MATIO_LIBS.])])
diff -Nur scilab-5.3.3.orig/modules/core/includes/machine.h.in scilab-5.3.3/modules/core/includes/machine.h.in
--- scilab-5.3.3.orig/modules/core/includes/machine.h.in	2012-04-16 21:18:43.000000000 +0100
+++ scilab-5.3.3/modules/core/includes/machine.h.in	2012-05-14 19:25:56.000000000 +0100
@@ -176,9 +176,6 @@
 /* Define to 1 if you have the <malloc.h> header file. */
 #undef HAVE_MALLOC_H
 
-/* Define to 1 if you have the <matioConfig.h> header file. */
-#undef HAVE_MATIOCONFIG_H
-
 /* Define to 1 if you have the <matio.h> header file. */
 #undef HAVE_MATIO_H