diff --git a/src/base/Makefile.am b/src/base/Makefile.am
index b2837dd0..7d19f561 100644
--- a/src/base/Makefile.am
+++ b/src/base/Makefile.am
@@ -25,6 +25,7 @@ libsidbase_la_SOURCES = buf-type-linear.c \
 			buf-type-vector.c \
 			buf.c \
 			comms.c \
+			conv_base64.c \
 			conv.c \
 			util.c