diff --git a/Makefile b/Makefile
index 086048dc..6173dc74 100644
--- a/Makefile
+++ b/Makefile
@@ -1027,10 +1027,13 @@ ifeq ($(USE_VOIP),1)
   CLIENT_CFLAGS += -DUSE_VOIP
   SERVER_CFLAGS += -DUSE_VOIP
   ifeq ($(USE_INTERNAL_SPEEX),1)
-    CLIENT_CFLAGS += -DFLOATING_POINT -DUSE_ALLOCA -I$(SPEEXDIR)/include
+    SPEEX_CFLAGS += -DFLOATING_POINT -DUSE_ALLOCA -I$(SPEEXDIR)/include
   else
-    CLIENT_LIBS += -lspeex -lspeexdsp
+    SPEEX_CFLAGS ?= $(shell pkg-config --silence-errors --cflags speex speexdsp || true)
+    SPEEX_LIBS ?= $(shell pkg-config --silence-errors --libs speex speexdsp || echo -lspeex -lspeexdsp)
   endif
+  CLIENT_CFLAGS += $(SPEEX_CFLAGS)
+  CLIENT_LIBS += $(SPEEX_LIBS)
 endif
 
 ifeq ($(USE_INTERNAL_ZLIB),1)