diff --git a/lib/Makefile.b32 b/lib/Makefile.b32
index 507a089123..eec7541be6 100644
--- a/lib/Makefile.b32
+++ b/lib/Makefile.b32
@@ -10,9 +10,10 @@
 #  Written by Jaepil Kim, pit@paradise.net.nz
 ############################################################
 
-# Check if BCCDIR is set.
-!if !$d(BCCDIR)
-!error BCCDIR not defined
+# Borland's $(MAKEDIR) expands to the path where make.exe is located,
+# use this feature to define BCCDIR when user has not defined BCCDIR.
+!if "$(BCCDIR)" == ""
+BCCDIR = $(MAKEDIR)\..
 !endif
 
 # Edit the path below to point to the base of your Zlib sources.
diff --git a/src/Makefile.b32 b/src/Makefile.b32
index 2f0a077945..53e9f2d05d 100644
--- a/src/Makefile.b32
+++ b/src/Makefile.b32
@@ -10,9 +10,10 @@
 #  Written by Jaepil Kim, pit@paradise.net.nz
 ############################################################
 
-# Check if BCCDIR is set.
-!if !$d(BCCDIR)
-!error BCCDIR not defined
+# Borland's $(MAKEDIR) expands to the path where make.exe is located,
+# use this feature to define BCCDIR when user has not defined BCCDIR.
+!if "$(BCCDIR)" == ""
+BCCDIR = $(MAKEDIR)\..
 !endif
 
 # Edit the path below to point to the base of your Zlib sources.