diff --git a/src/os2/files.lst b/src/os2/files.lst
index 9d528c5849..41653ae35b 100644
--- a/src/os2/files.lst
+++ b/src/os2/files.lst
@@ -137,6 +137,7 @@ ALL_SOURCES = \
 		common/radiocmn.cpp \
 		common/regex.cpp \
 		common/resource.cpp \
+		common/rgncmn.cpp \
 		common/sckaddr.cpp \
 		common/sckfile.cpp \
 		common/sckipc.cpp \
@@ -736,6 +737,7 @@ COMMONOBJS = \
 		radiocmn.o \
 		regex.o \
 		resource.o \
+		rgncmn.o \
 		sckaddr.o \
 		sckfile.o \
 		sckipc.o \