diff --git a/pd/src/makefile.in b/pd/src/makefile.in
index 0b0f377f3dd3eaac4f5c131b057819dc0e35eebb..e42b6c996598ed590b7e747a22c25889c86a631c 100644
--- a/pd/src/makefile.in
+++ b/pd/src/makefile.in
@@ -41,7 +41,7 @@ LDFLAGS = @LDFLAGS@
 LIB =  @PDLIB@
 
 WARN_CFLAGS = -Wall -W -Wstrict-prototypes \
-    -Wno-unused -Wno-parentheses -Wno-switch
+    -Wno-unused-parameter -Wno-parentheses -Wno-switch
 ARCH_CFLAGS = -DPD 
 
 CFLAGS = @CFLAGS@ $(ARCH_CFLAGS) $(WARN_CFLAGS) $(CPPFLAGS) $(MORECFLAGS)