diff --git a/dlls/ctapi32/Makefile.in b/dlls/ctapi32/Makefile.in
index eec24c64cde..fa13d24540c 100644
--- a/dlls/ctapi32/Makefile.in
+++ b/dlls/ctapi32/Makefile.in
@@ -1,4 +1,5 @@
 MODULE    = ctapi32.dll
+UNIXLIB   = ctapi32.so
 IMPORTS   = advapi32
 
 C_SRCS = \