diff --git a/compiler/cpp/Makefile.am b/compiler/cpp/Makefile.am
index 7a89c54..4c0e71d 100644
--- a/compiler/cpp/Makefile.am
+++ b/compiler/cpp/Makefile.am
@@ -21,6 +21,10 @@
 # Please see doc/old-thrift-license.txt in the Thrift distribution for
 # details.
 
+# Override Automake rule that forces .hh extension 
+am__yacc_c2h = sed -e s/cc$$/h/ -e s/cpp$$/hpp/ -e s/cxx$$/hxx/ \
+           -e s/c++$$/h++/ -e s/c$$/h/
+
 AM_YFLAGS = -d
 LIBS =
 BUILT_SOURCES =