diff --git a/qmake/sharedlib/jkqtplotterlib/jkqtplotterlib.pro b/qmake/sharedlib/jkqtplotterlib/jkqtplotterlib.pro
index 47ab7e5131..e32fd76033 100644
--- a/qmake/sharedlib/jkqtplotterlib/jkqtplotterlib.pro
+++ b/qmake/sharedlib/jkqtplotterlib/jkqtplotterlib.pro
@@ -24,6 +24,6 @@ include(../../../lib/jkqtplotter.pri)
 
 
 include(../../../lib/jkqtplotter_pch.pri)
-precompile_header:!isEmpty(PRECOMPILED_HEADER) {
+!isEmpty(PRECOMPILED_HEADER) {
   DEFINES += USING_PCH
 }