diff --git a/iocBoot/iocvxWorks/16element_dxp.substitutions b/iocBoot/iocvxWorks/16element_dxp.substitutions
index 75e462d21623bddbea30c188f889c8543086af52..ceca2d895063dbd75c9873dd66f4197938f18239 100755
--- a/iocBoot/iocvxWorks/16element_dxp.substitutions
+++ b/iocBoot/iocvxWorks/16element_dxp.substitutions
@@ -1,4 +1,4 @@
-file mcaApp/Db/simple_mca.db mca
+file "$(MCA)/mcaApp/Db/simple_mca.db"
 {
 pattern
 {P,           M,       DTYP,         INP          PREC,  CHANS}
@@ -21,7 +21,7 @@ pattern
 }
 
 # DXP records
-file camacApp/Db/dxp2x.db camac
+file "$(DXP)/dxpApp/Db/dxp2x.db"
 {
 pattern
 {P,           R,        INP       }
diff --git a/iocBoot/iocvxWorks/pid_fast.substitutions b/iocBoot/iocvxWorks/pid_fast.substitutions
index 0fb2dda6f438ea3cbbfea8f6c878f688e5ef7e76..88b94147a7a6e12ae89d379fc8791ea8e43e14f2 100755
--- a/iocBoot/iocvxWorks/pid_fast.substitutions
+++ b/iocBoot/iocvxWorks/pid_fast.substitutions
@@ -1,4 +1,4 @@
-file ipApp/Db/fast_pid_control.db ip
+file "$(IP)/ipApp/Db/fast_pid_control.db"
 {
 pattern
 {P,      PID,   C,  SERVER,       LOPR,     HOPR,  DRVL,  DRVH,  PREC,   KP,  KI,   KD,  DT, SCAN}
diff --git a/iocBoot/iocvxWorks/pid_slow.substitutions b/iocBoot/iocvxWorks/pid_slow.substitutions
index 6137921337c508712735d88963d1c49b77e4bd28..dbe8f24c7aaf349b42145701a19638be86baad61 100755
--- a/iocBoot/iocvxWorks/pid_slow.substitutions
+++ b/iocBoot/iocvxWorks/pid_slow.substitutions
@@ -1,4 +1,4 @@
-file stdApp/Db/pid_control.db std
+file "$(STD)/stdApp/Db/pid_control.db"
 {
 pattern
 {P,      PID,       INP,           OUT,    LOPR,  HOPR,  DRVL,  DRVH,  PREC,   KP,  KI,   KD,  SCAN}