diff --git a/Makefile.detect b/Makefile.detect
index a65bfc8c..eb47c99e 100644
--- a/Makefile.detect
+++ b/Makefile.detect
@@ -8,7 +8,10 @@ ifeq ($(shell uname),Darwin)
 PLATFORM=macosx
 else
 ifeq ($(shell uname),FreeBSD)
-PLATFORM=FreeBSD
+PLATFORM=bsd
+else
+ifeq ($(shell uname),DragonFly)
+PLATFORM=bsd
 else
 ifeq ($(shell uname -o),Msys)
 PLATFORM=mingw
@@ -64,15 +67,16 @@ SO  = .so
 EXE =
 CLIBFLAGS = -fPIC -shared
 STATICFLAGS = -static -DSEXP_USE_DL=0
-ifeq ($(PLATFORM),FreeBSD)
+ifeq ($(PLATFORM),BSD)
 LIBDL=
 RLDFLAGS=-Wl,-R$(DESTDIR)$(LIBDIR)
 endif
 endif
 endif
 endif
+endif
 
 ifeq ($(PLATFORM),unix)
 #RLDFLAGS=-rpath $(LIBDIR)
-RLDFLAGS=-Wl,-R$(LIBDIR)
+RLDFLAGS=-Wl,-R$(DESTDIR)$(LIBDIR)
 endif
diff --git a/doc/chibi.scrbl b/doc/chibi.scrbl
index b21ebc14..984cee4b 100755
--- a/doc/chibi.scrbl
+++ b/doc/chibi.scrbl
@@ -27,8 +27,8 @@ standard modules.  You can choose whichever layer suits your needs
 best and customize the rest.  Adding your own primitives or wrappers
 around existing C libraries is easy with the C FFI.
 
-Chibi is known to build and run on 32 and 64-bit Linux, FreeBSD, OS X,
-iOS, Windows (under Cygwin) and Plan9.
+Chibi is known to build and run on 32 and 64-bit Linux, FreeBSD,
+DragonFly, OS X, iOS, Windows (under Cygwin) and Plan9.
 
 @section{Installation}
 
diff --git a/lib/chibi/signal.c b/lib/chibi/signal.c
index 1d73f381..9f9a190a 100644
--- a/lib/chibi/signal.c
+++ b/lib/chibi/signal.c
@@ -62,7 +62,9 @@ static sexp sexp_set_signal_action (sexp ctx, sexp self, sexp signum, sexp newac
 #if SEXP_BSD
 
 #include <sys/time.h>
+#ifndef __DragonFly__
 #include <sys/proc.h>
+#endif
 #include <sys/sysctl.h>
 #include <sys/user.h>
 
@@ -73,6 +75,8 @@ static sexp sexp_pid_cmdline (sexp ctx, int pid) {
   if (sysctl(name, 4, &res, &reslen, NULL, 0) >= 0) {
 #ifdef __APPLE__
     return sexp_c_string(ctx, res.kp_proc.p_comm, -1);
+#elif __DragonFly__
+    return sexp_c_string(ctx, res.kp_comm, -1);
 #else
     return sexp_c_string(ctx, res.ki_comm, -1);
 #endif