diff --git a/CMakeLists.txt b/CMakeLists.txt
index 225ba1797..f57b17472 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -88,7 +88,10 @@ set( LICENSE "Mozilla Public License Version 2.0" )
 # Build, project and include settings
 find_package(Threads REQUIRED)
 if(WITH_DLT_SYSTEM)
+  set(ZLIB_LIBRARY "-lz")
   find_package(ZLIB REQUIRED)
+else(WITH_DLT_SYSTEM)
+  set(ZLIB_LIBRARY "")
 endif(WITH_DLT_SYSTEM)
 
 find_package(PkgConfig)
diff --git a/automotive-dlt.pc.in b/automotive-dlt.pc.in
index d587ea127..d19a1e4d3 100644
--- a/automotive-dlt.pc.in
+++ b/automotive-dlt.pc.in
@@ -24,6 +24,6 @@ Name: DLT
 Description: Diagnostic Log and Trace
 Version: @DLT_VERSION@
 Requires:
-Libs: -L${libdir} -ldlt -lrt -lpthread -lz
+Libs: -L${libdir} -ldlt -lrt -lpthread @ZLIB_LIBRARY@
 Cflags: -I${includedir}/dlt -DDLT_@DLT_MAJOR_VERSION@_@DLT_MINOR_VERSION@