diff --git a/sdl-config.in b/sdl-config.in
index e0fcc0c..de602d8 100644
--- a/sdl-config.in
+++ b/sdl-config.in
@@ -1,6 +1,7 @@
 #!/bin/sh
 
-prefix=@prefix@
+DIRNAME=$(dirname $0)
+prefix=$(CDPATH= cd -- "${DIRNAME%/tools/sdl1/*}" && pwd -P)
 exec_prefix=@exec_prefix@
 exec_prefix_set=no
 libdir=@libdir@