diff --git a/xilinx/common/tcl/vivado.tcl b/xilinx/common/tcl/vivado.tcl
index 7c4962e..afbd5f0 100644
--- a/xilinx/common/tcl/vivado.tcl
+++ b/xilinx/common/tcl/vivado.tcl
@@ -5,7 +5,7 @@ source [file join $scriptdir "synth.tcl"]
 
 # Pre-implementation debug
 if {[info exists ::env(PRE_IMPL_DEBUG_TCL)]} {
-  source [file join $scriptdir ::env(PRE_IMPL_DEBUG_TCL)]
+  source [file join $scriptdir $::env(PRE_IMPL_DEBUG_TCL)]
 }
 
 # Post synthesis optimization
@@ -22,7 +22,7 @@ source [file join $scriptdir "bitstream.tcl"]
 
 # Post-implementation debug
 if {[info exists ::env(POST_IMPL_DEBUG_TCL)]} {
-  source [file join $scriptdir ::env(POST_IMPL_DEBUG_TCL)]
+  source [file join $scriptdir $::env(POST_IMPL_DEBUG_TCL)]
 }
 
 # Create reports for the current implementation