diff --git a/aegisub/configure.in b/aegisub/configure.in
index cf4164521..721810803 100644
--- a/aegisub/configure.in
+++ b/aegisub/configure.in
@@ -46,7 +46,6 @@ AC_CANONICAL_HOST
 ###########################
 build_darwin="no"
 build_linux="no"
-build_bsd="no"
 build_default="no"
 
 AS_CASE([$host],
@@ -58,13 +57,11 @@ AS_CASE([$host],
 AS_CASE([$host],
         [*-*-darwin*], [build_darwin="yes"; AC_SUBST(DARWIN_ARCH)],
         [*-*-linux*],  [build_linux="yes"],
-        [*-*-bsd*],    [build_bsd="yes"],
         [build_default="yes"])
 
 # Used for universalchardet.
 AC_AGI_MDCPUCFG($host)
 
-AC_SUBST(build_bsd)
 AC_SUBST(build_linux)
 AC_SUBST(build_darwin)
 AC_SUBST(build_default)