diff --git a/configure.ac b/configure.ac
index c3c213a..01fbbe6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -8,7 +8,7 @@ AH_TOP([#define LIBSECP256K1_CONFIG_H])
 AH_BOTTOM([#endif /*LIBSECP256K1_CONFIG_H*/])
 AM_INIT_AUTOMAKE([foreign subdir-objects])
 
-LT_INIT
+LT_INIT([win32-dll])
 
 # Make the compilation flags quiet unless V=1 is used.
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])