diff --git a/core/plug-in/speex/Makefile b/core/plug-in/speex/Makefile
index 022a6b13..0a311f32 100644
--- a/core/plug-in/speex/Makefile
+++ b/core/plug-in/speex/Makefile
@@ -1,7 +1,7 @@
 plug_in_name = speex
 
-SPEEX_INC?=/usr/include/
-SPEEX_LIB?=-lspeex
+SPEEX_INC=/usr/include/
+SPEEX_LIB=-lspeex
 
 # or: 
 # SPEEXDIR?=speex_src
@@ -14,6 +14,10 @@ SPEEX_LIB?=-lspeex
 module_ldflags = $(SPEEX_LIB)
 module_cflags  = -I $(SPEEX_INC) -ansi # -DNOFPU
 
+ifdef NOFPU
+	module_cflags += -DNOFPU
+endif
+
 # or
 # module_extra_objs = $(SPEEX_LIB)
 #extra_clean = clean_speex