diff --git a/hamlib.pc.in b/hamlib.pc.in
index 1ecc620ce..fdb54182f 100644
--- a/hamlib.pc.in
+++ b/hamlib.pc.in
@@ -3,10 +3,12 @@ exec_prefix=${prefix}
 libdir=${exec_prefix}/lib
 includedir=${prefix}/include
 
-Name: hamlib
+Name: @PACKAGE_NAME@
 Description: Library to control radio and rotator equipment.
 URL: @PACKAGE_URL@
-Requires: 
-Version: @VERSION@
-Libs: -L${libdir} -lhamlib @MATH_LIBS@
+Version: @PACKAGE_VERSION@
+Requires.private: libusb >= 0.1
+Conflicts: libusb >= 1.0
 Cflags: -I${includedir}
+Libs: -L${libdir} -lhamlib
+Libs.private: -lm -ldl -lpthread