diff --git a/SRC/material/uniaxial/Makefile b/SRC/material/uniaxial/Makefile
index 0dfaa3e8f0..2c873b74f1 100644
--- a/SRC/material/uniaxial/Makefile
+++ b/SRC/material/uniaxial/Makefile
@@ -162,6 +162,9 @@ OBJS       = UniaxialMaterial.o \
 	FlagShapeMaterial.o \
 	GMG_CyclicReinforcedConcrete.o \
 	CreepMaterial.o \
+	APDFMD.o \
+	APDMD.o \
+	APDVFD.o \
     TclModelBuilderUniaxialMaterialCommand.o
 
 all:         $(OBJS)