diff --git a/acinclude.m4 b/acinclude.m4
index 48fd8bdbc..22bf69ae4 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -401,7 +401,7 @@ AC_DEFUN([GB_INIT],
 AC_DEFUN([GB_THREAD],
 [
   case "${host}" in
-    *-*-freebsd* | *-*-darwin* )
+    *-*-freebsd* | *-*-netbsd* | *-*-darwin* )
       THREAD_LIB=""
       THREAD_INC="-pthread -D_REENTRANT"
       GBX_THREAD_LIB=""
@@ -415,13 +415,6 @@ AC_DEFUN([GB_THREAD],
       GBX_THREAD_INC=""
       GBX_THREAD_LDFLAGS=""
       ;;
-    *-*-netbsd* )
-      THREAD_LIB=""
-      THREAD_INC="-pthread -D_REENTRANT"
-      GBX_THREAD_LIB=""
-      GBX_THREAD_INC="-pthread -D_REENTRANT"
-      GBX_THREAD_LDFLAGS=""
-      ;;
     *)
       THREAD_LIB="-lpthread"
       THREAD_INC="-D_REENTRANT"