diff --git a/debian/_base/tdevelop/debian/rules b/debian/_base/tdevelop/debian/rules
index f8fbb0de1..2b1734299 100755
--- a/debian/_base/tdevelop/debian/rules
+++ b/debian/_base/tdevelop/debian/rules
@@ -75,7 +75,7 @@ DEB_CMAKE_EXTRA_FLAGS := \
  -DWITH_BUILDTOOL_ALL="ON" \
  -DWITH_LANGUAGE_ALL="ON" \
  -DWITH_VCS_ALL="ON" \
- -DQTDIR="/usr/share/tqt3" 
+ -DTQTDIR="/usr/share/tqt3"
 
 binary-install/tdevelop-trinity::
 	mkdir -p debian/tdevelop-trinity/opt/trinity/share/pixmaps
diff --git a/ubuntu/_base/tdevelop/debian/rules b/ubuntu/_base/tdevelop/debian/rules
index f8fbb0de1..2b1734299 100755
--- a/ubuntu/_base/tdevelop/debian/rules
+++ b/ubuntu/_base/tdevelop/debian/rules
@@ -75,7 +75,7 @@ DEB_CMAKE_EXTRA_FLAGS := \
  -DWITH_BUILDTOOL_ALL="ON" \
  -DWITH_LANGUAGE_ALL="ON" \
  -DWITH_VCS_ALL="ON" \
- -DQTDIR="/usr/share/tqt3" 
+ -DTQTDIR="/usr/share/tqt3"
 
 binary-install/tdevelop-trinity::
 	mkdir -p debian/tdevelop-trinity/opt/trinity/share/pixmaps