diff --git a/Makefile b/Makefile
index 82189a3c..28a6b2b8 100644
--- a/Makefile
+++ b/Makefile
@@ -174,6 +174,7 @@ runtime.o : runtime.c $(HEADERS)
 	$(CCOMP) -c \
 					-DCYC_INSTALL_DIR=\"$(PREFIX)\" \
 					-DCYC_INSTALL_LIB=\"$(LIBDIR)\" \
+					-DCYC_INSTALL_BIN=\"$(BINDIR)\" \
 					-DCYC_INSTALL_INC=\"$(INCDIR)\" \
 					-DCYC_INSTALL_SLD=\"$(DATADIR)\" \
 					-DCYC_CC_PROG=\"$(CC_PROG)\" \
diff --git a/runtime.c b/runtime.c
index 682ce1ea..5af65d43 100644
--- a/runtime.c
+++ b/runtime.c
@@ -2561,6 +2561,12 @@ object Cyc_installation_dir(void *data, object cont, object type)
     snprintf(buf, sizeof(buf), "%s", CYC_INSTALL_LIB);
     make_utf8_string(data, str, buf);
     _return_closcall1(data, cont, &str);
+  } else if (Cyc_is_symbol(type) == boolean_t &&
+             strncmp(((symbol) type)->desc, "bin", 5) == 0) {
+    char buf[1024];
+    snprintf(buf, sizeof(buf), "%s", CYC_INSTALL_BIN);
+    make_utf8_string(data, str, buf);
+    _return_closcall1(data, cont, &str);
   } else if (Cyc_is_symbol(type) == boolean_t &&
              strncmp(((symbol) type)->desc, "inc", 5) == 0) {
     char buf[1024];