diff --git a/Medicina/Clients/MedicinaActiveSurfaceGUIClient/src/Makefile b/Medicina/Clients/MedicinaActiveSurfaceGUIClient/src/Makefile
index d62439c8d3844bfdf255426767fb7e2ee9e83c32..12ad305d6ee5f5716794d932de325c57f703d321 100644
--- a/Medicina/Clients/MedicinaActiveSurfaceGUIClient/src/Makefile
+++ b/Medicina/Clients/MedicinaActiveSurfaceGUIClient/src/Makefile
@@ -18,7 +18,7 @@
 
 #
 # user definable C-compilation flags
-USER_CFLAGS = -DQT_THREAD_SUPPORT
+USER_CFLAGS = -DQT_THREAD_SUPPORT -fno-var-tracking-assignments
 
 #
 # additional include and library search paths
diff --git a/Noto/Clients/NotoActiveSurfaceGUIClient/src/Makefile b/Noto/Clients/NotoActiveSurfaceGUIClient/src/Makefile
index ef33c180cf410a695140464110264b4b7e4710ab..08a1873568fa522ed496337bd491bc8e60ff5a97 100644
--- a/Noto/Clients/NotoActiveSurfaceGUIClient/src/Makefile
+++ b/Noto/Clients/NotoActiveSurfaceGUIClient/src/Makefile
@@ -18,7 +18,7 @@
 
 #
 # user definable C-compilation flags
-USER_CFLAGS = -DQT_THREAD_SUPPORT
+USER_CFLAGS = -DQT_THREAD_SUPPORT -fno-var-tracking-assignments
 
 #
 # additional include and library search paths
diff --git a/SRT/Clients/SRTActiveSurfaceGUIClient/src/Makefile b/SRT/Clients/SRTActiveSurfaceGUIClient/src/Makefile
index 3cddab74fde3779c0acd984894d79c1d833b87a7..dabed8d0a1b42d65fbc609139d87339051245d70 100644
--- a/SRT/Clients/SRTActiveSurfaceGUIClient/src/Makefile
+++ b/SRT/Clients/SRTActiveSurfaceGUIClient/src/Makefile
@@ -18,7 +18,7 @@
 
 #
 # user definable C-compilation flags
-USER_CFLAGS = -DQT_THREAD_SUPPORT
+USER_CFLAGS = -DQT_THREAD_SUPPORT -fno-var-tracking-assignments
 
 #
 # additional include and library search paths