diff --git a/gdal/ogr/ogrct.cpp b/gdal/ogr/ogrct.cpp
index d5c3287..1159c31 100644
--- a/gdal/ogr/ogrct.cpp
+++ b/gdal/ogr/ogrct.cpp
@@ -102,7 +102,7 @@ static bool      bProjLocaleSafe = false;
 #elif defined(__APPLE__)
 #  define LIBNAME "libproj.dylib"
 #else
-#  define LIBNAME "libproj.so"
+#  define LIBNAME "libproj.so.0"
 #endif
 
 /************************************************************************/