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-rw-r--r--gr-howto-write-a-block/configure.ac2
1 files changed, 1 insertions, 1 deletions
diff --git a/gr-howto-write-a-block/configure.ac b/gr-howto-write-a-block/configure.ac
index 9b80b3cac..8b1a10f69 100644
--- a/gr-howto-write-a-block/configure.ac
+++ b/gr-howto-write-a-block/configure.ac
@@ -79,7 +79,7 @@ AC_CHECK_FUNCS([])
dnl Check for Mingw support
GR_PWIN32
-PKG_CHECK_MODULES(GNURADIO_CORE, gnuradio-core >= 2)
+PKG_CHECK_MODULES(GNURADIO_CORE, gnuradio-core >= 3)
LIBS="$LIBS $GNURADIO_CORE_LIBS"
dnl Define where to find boost includes