diff --git a/configure/os/CONFIG.Common.darwin-ppc b/configure/os/CONFIG.Common.darwin-ppc
index d8f5dd805..19d23c376 100644
--- a/configure/os/CONFIG.Common.darwin-ppc
+++ b/configure/os/CONFIG.Common.darwin-ppc
@@ -19,6 +19,11 @@ ARCH_CLASS = ppc
 #
 OP_SYS_CFLAGS += -fno-common
 
+#
+# Don't try to use precompiled headers when converting sequencer files
+#
+CPPSNCFLAGS += -no-cpp-precomp
+
 #
 # Need to get some fink-installed packages (readline, etc.).
 # If you don't have readline on your system you must remove