diff --git a/configure.ac b/configure.ac
index 3c75d10..d6d31f8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -89,6 +89,14 @@ else
   TESTS_INFO="Valgrind testing not enabled"
 fi
 
+# Check for custom PSL file
+AC_ARG_WITH(psl-file,
+  AC_HELP_STRING([--with-psl-file=[PATH]],
+  [path to PSL file]),
+  PSL_FILE=$withval,
+  PSL_FILE="\$(top_srcdir)/data/effective_tld_names.dat")
+AC_SUBST(PSL_FILE)
+
 # Override the template file name of the generated .pc file, so that there
 # is no need to rename the template file when the API version changes.
 AC_CONFIG_FILES([Makefile
@@ -111,5 +119,6 @@ AC_MSG_NOTICE([Summary of build options:
   CFlags:            ${CFLAGS} ${CPPFLAGS}
   LDFlags:           ${LDFLAGS}
   Builtin PSL:       ${enable_builtin}
+  PSL File:          ${PSL_FILE}
   Tests:             ${TESTS_INFO}
 ])
diff --git a/src/Makefile.am b/src/Makefile.am
index 05d4e13..0f70961 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -19,5 +19,6 @@ psl2c_CPPFLAGS = -I$(top_srcdir)/include -D _GNU_SOURCE
 #psl2c_LDADD = -lidn2
 
 # Build rule for suffix.c
-suffixes.c: $(top_srcdir)/data/effective_tld_names.dat psl2c$(EXEEXT)
-	./psl2c$(EXEEXT) $(top_srcdir)/data/effective_tld_names.dat suffixes.c
+# PSL_FILE can be set by ./configure --with-psl-file=[PATH]
+suffixes.c: $(PSL_FILE) psl2c$(EXEEXT)
+	./psl2c$(EXEEXT) "$(PSL_FILE)" suffixes.c
diff --git a/tests/Makefile.am b/tests/Makefile.am
index d5b9e06..e867f17 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -1,4 +1,4 @@
-DEFS = @DEFS@ -DDATADIR=\"$(top_srcdir)/data\" -DSRCDIR=\"$(srcdir)\"
+DEFS = @DEFS@ -DDATADIR=\"$(top_srcdir)/data\" -DSRCDIR=\"$(srcdir)\" -DPSL_FILE=\"$(PSL_FILE)\"
 AM_CPPFLAGS = -I$(top_srcdir)/include
 LDADD = ../src/libpsl-@LIBPSL_API_VERSION@.la
 
diff --git a/tests/test-is-public-all.c b/tests/test-is-public-all.c
index a784dec..91f6098 100644
--- a/tests/test-is-public-all.c
+++ b/tests/test-is-public-all.c
@@ -50,11 +50,11 @@ static void test_psl(void)
 	int result;
 	char buf[256], domain[64], *linep, *p;
 
-	psl = psl_load_file(DATADIR "/effective_tld_names.dat");
+	psl = psl_load_file(PSL_FILE); // PSL_FILE can be set by ./configure --with-psl-file=[PATH]
 
 	printf("loaded %d suffixes and %d exceptions\n", psl_suffix_count(psl), psl_suffix_exception_count(psl));
 
-	if ((fp = fopen(DATADIR "/effective_tld_names.dat", "r"))) {
+	if ((fp = fopen(PSL_FILE, "r"))) {
 		while ((linep = fgets(buf, sizeof(buf), fp))) {
 			while (isspace(*linep)) linep++; // ignore leading whitespace
 			if (!*linep) continue; // skip empty lines
@@ -105,7 +105,7 @@ static void test_psl(void)
 
 		fclose(fp);
 	} else {
-		printf("Failed to open %s\n", DATADIR "/effective_tld_names.dat");
+		printf("Failed to open %s\n", PSL_FILE);
 		failed++;
 	}
 
diff --git a/tests/test-is-public.c b/tests/test-is-public.c
index c6dc149..24cb32e 100644
--- a/tests/test-is-public.c
+++ b/tests/test-is-public.c
@@ -70,7 +70,7 @@ static void test_psl(void)
 	unsigned it;
 	psl_ctx_t *psl;
 
-	psl = psl_load_file(DATADIR "/effective_tld_names.dat");
+	psl = psl_load_file(PSL_FILE);
 
 	printf("loaded %d suffixes and %d exceptions\n", psl_suffix_count(psl), psl_suffix_exception_count(psl));