diff --git a/configure b/configure
--- a/configure
+++ b/configure
@@ -115,9 +115,10 @@ AWKCOMMAND='
 		if ($0 == "DEDICATED"   && "'$enable_dedicated'" != "1")   { next; }
 		if ($0 == "COCOA"       && "'$with_cocoa'" == "0")         { next; }
 		if ($0 == "DOS"         && "'$os'" != "DOS")               { next; }
-		if ($0 == "BEOS"        && "'$os'" != "BEOS")              { next; }
+		if ($0 == "BEOS"        && "'$os'" != "BEOS" &&
+		                                       "'$os'" != "HAIKU") { next; }
 		if ($0 == "WIN32"       && "'$os'" != "MINGW" &&
-		                "'$os'" != "CYGWIN" && "'$os'" != "MSVC" ) { next; }
+		                 "'$os'" != "CYGWIN" && "'$os'" != "MSVC") { next; }
 		if ($0 == "MORPHOS"     && "'$os'" != "MORPHOS")           { next; }
 		if ($0 == "WINCE"       && "'$os'" != "WINCE")             { next; }
 		if ($0 == "MSVC"        && "'$os'" != "MSVC")              { next; }