diff --git a/QLog.pro b/QLog.pro
index 3c4421a2..003144a9 100644
--- a/QLog.pro
+++ b/QLog.pro
@@ -22,6 +22,10 @@ DEFINES += VERSION=\\\"$$VERSION\\\"
 #HAMLIBVERSION_MINOR =
 #HAMLIBVERSION_PATCH =
 
+# Define paths to pthread - needed for Hamlib4.5 and later. Leave empty if system libraries should be used
+#PTHREADINCLUDEPATH =
+#PTHREADLIBPATH =
+
 # Define paths to QTKeyChain. Leave empty if system libraries should be used
 #QTKEYCHAININCLUDEPATH =
 #QTKEYCHAINLIBPATH =
@@ -357,8 +361,8 @@ isEmpty(HAMLIBVERSION_MAJOR) {
    }
 }
 
-INCLUDEPATH += $$HAMLIBINCLUDEPATH $$QTKEYCHAININCLUDEPATH
-LIBS += -L$$HAMLIBLIBPATH -L$$QTKEYCHAINLIBPATH
+INCLUDEPATH += $$HAMLIBINCLUDEPATH $$QTKEYCHAININCLUDEPATH $$PTHREADINCLUDEPATH
+LIBS += -L$$HAMLIBLIBPATH -L$$QTKEYCHAINLIBPATH -L$$PTHREADINCLUDEPATH
 
 unix:!macx {
    isEmpty(PREFIX) {