--- a/spatialite.pc.in
+++ b/spatialite.pc.in
@@ -9,4 +9,5 @@
 Description: Spatial SQL database engine based on SQLite
 Version: @VERSION@
 Libs: -L${libdir} -lspatialite @LIBS@ @LIBXML2_LIBS@ @SQLITE3_LIBS@ -lm
+Libs.private: -liconv -lz -lm
 Cflags: -I${includedir}