diff --git a/android/jni/Android.mk b/android/jni/Android.mk
index 5dd4cc7f..8a6a2332 100644
--- a/android/jni/Android.mk
+++ b/android/jni/Android.mk
@@ -30,6 +30,7 @@ ESPEAK_SOURCES := \
   src/libespeak-ng/setlengths.c \
   src/libespeak-ng/spect.c \
   src/libespeak-ng/speech.c \
+  src/libespeak-ng/ssml.c \
   src/libespeak-ng/synthdata.c \
   src/libespeak-ng/synthesize.c \
   src/libespeak-ng/synth_mbrola.c \