diff --git a/cde/programs/dtsession/Imakefile b/cde/programs/dtsession/Imakefile
index 8da6ce00a..a7fb034af 100644
--- a/cde/programs/dtsession/Imakefile
+++ b/cde/programs/dtsession/Imakefile
@@ -78,8 +78,8 @@ SYS_LIBRARIES = $(XPLIB) $(XINLIB) -lXss -ldl -lcrypt -lm
 #endif
 
 #if defined(FreeBSDArchitecture) || defined(NetBSDArchitecture)
-EXTRA_DEFINES = -D${PROGRAMS} $(XINOPT)
-SYS_LIBRARIES = $(XPLIB) $(XINLIB) -lcrypt -lm
+EXTRA_DEFINES = -D${PROGRAMS} $(XINOPT) -DUSE_X11SSEXT
+SYS_LIBRARIES = $(XPLIB) $(XINLIB) -lXss -lcrypt -lm
 #endif
 
 PROGRAMS=dtsession