diff --git a/gdb/config/bigmips.mt b/gdb/config/bigmips.mt
index c52e39b1bed..51b61affee0 100644
--- a/gdb/config/bigmips.mt
+++ b/gdb/config/bigmips.mt
@@ -1,3 +1,3 @@
 # Target: Big-endian MIPS machine such as Sony News
-TDEPFILES= mips-pinsn.o mips-tdep.o mipsread.o exec.o
+TDEPFILES= mips-pinsn.o mips-tdep.o mipsread.o exec.o ecoff.o
 TM_FILE= tm-bigmips.h
diff --git a/gdb/config/littlemips.mt b/gdb/config/littlemips.mt
index 8025b9c4335..a380df45274 100644
--- a/gdb/config/littlemips.mt
+++ b/gdb/config/littlemips.mt
@@ -1,3 +1,3 @@
 # Target: Little-endian MIPS machine such as DECstation.
-TDEPFILES= mips-pinsn.o mips-tdep.o mipsread.o exec.o
+TDEPFILES= mips-pinsn.o mips-tdep.o mipsread.o exec.o ecoff.o
 TM_FILE= tm-mips.h