diff --git a/Makefile.am b/Makefile.am
index 71b8c6f9..429554e1 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -134,7 +134,7 @@ src_libespeak_ng_la_LDFLAGS = -version-info $(SHARED_VERSION) -lpthread -lm \
 
 src_libespeak_ng_la_CFLAGS = \
 	-fPIC -fvisibility=hidden \
-	-pedantic -fno-exceptions -D PATH_ESPEAK_DATA=\"$(DATADIR)\" -DLIBESPEAK_NG_EXPORT \
+	-pedantic -fno-exceptions -DPATH_ESPEAK_DATA=\"$(DATADIR)\" -DLIBESPEAK_NG_EXPORT \
 	${PCAUDIOLIB_CFLAGS} ${AM_CFLAGS}
 
 src_libespeak_ng_la_SOURCES = \