diff --git a/motorApp/PiSrc/Makefile b/motorApp/PiSrc/Makefile
index 23c1b0a6..5e482546 100644
--- a/motorApp/PiSrc/Makefile
+++ b/motorApp/PiSrc/Makefile
@@ -14,6 +14,7 @@ LIBRARY_IOC = PI
 SRCS += devPIC844.cc drvPIC844.cc PiRegister.cc
 SRCS += devPIC630.cc drvPIC630.cc PIC630Register.cc
 SRCS += devPIC848.cc drvPIC848.cc PIC848Register.cc
+SRCS += devPIC662.cc drvPIC662.cc PIC662Register.cc
 
 PI_LIBS += motor asyn
 PI_LIBS += $(EPICS_BASE_IOC_LIBS)