diff --git a/src/sbbs3/GNUmakefile b/src/sbbs3/GNUmakefile
index fcec7a66aa085c3e5732e06365d36a5512554fbe..0c1def40687f2a1207508ce3575f2de56850d73f 100644
--- a/src/sbbs3/GNUmakefile
+++ b/src/sbbs3/GNUmakefile
@@ -62,7 +62,8 @@ endif
 ifdef NSPRINCLUDE
  CFLAGS += -I$(NSPRINCLUDE)
 else
- CFLAGS += -I$(SRC_ROOT)$(DIRSEP)..$(DIRSEP)include$(DIRSEP)mozilla$(DIRSEP)nspr
+ # Use local NSPR first...
+ CFLAGS += -I/usr/local/include -I$(SRC_ROOT)$(DIRSEP)..$(DIRSEP)include$(DIRSEP)mozilla$(DIRSEP)nspr
 endif
 ifndef JSLIBDIR
  JSLIBDIR := $(SRC_ROOT)$(DIRSEP)..$(DIRSEP)lib$(DIRSEP)mozilla$(DIRSEP)js$(DIRSEP)$(machine).$(BUILD)