fix copy/paste mistake in src/Makefile.am
diff --git a/src/Makefile.am b/src/Makefile.am
index cbafe8a..d609445 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -19,5 +19,5 @@
 rua_encoder.c rua_decoder.c rua_ies_defs.h: $(ASN1_ROOT)/rua/RUA-PDU-Contents.asn
 	$(ASN1TOSTRUCT) -p RUA_ -f $<
 
-ranap_encoder.c rua_decoder.c rua_ies_defs.h: $(ASN1_ROOT)/ranap/RANAP-PDU-Contents.asn
+ranap_encoder.c ranap_decoder.c ranap_ies_defs.h: $(ASN1_ROOT)/ranap/RANAP-PDU-Contents.asn
 	$(ASN1TOSTRUCT) -p RANAP_ -f $<