diff --git a/CMakeLists.txt b/CMakeLists.txt
index 12bfda1..4c5649e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -66,8 +66,7 @@ if(UTF8PROC_ENABLE_TESTING)
   file(MAKE_DIRECTORY data)
   set(UNICODE_VERSION 13.0.0)
   file(DOWNLOAD http://www.unicode.org/Public/${UNICODE_VERSION}/ucd/NormalizationTest.txt data/NormalizationTest.txt SHOW_PROGRESS)
-  file(DOWNLOAD http://www.unicode.org/Public/${UNICODE_VERSION}/ucd/auxiliary/GraphemeBreakTest.txt data/GraphemeBreakTestOrg.txt SHOW_PROGRESS)
-  execute_process(COMMAND bash -c "cat data/GraphemeBreakTestOrg.txt | /usr/bin/perl -pe 's,÷,/,g;s,×,+,g' && rm -f data/GraphemeBreakTestOrg.txt" OUTPUT_FILE data/GraphemeBreakTest.txt)
+  file(DOWNLOAD http://www.unicode.org/Public/${UNICODE_VERSION}/ucd/auxiliary/GraphemeBreakTest.txt data/GraphemeBreakTest.txt SHOW_PROGRESS)
   add_executable(case test/tests.h test/tests.c utf8proc.h test/case.c)
   target_link_libraries(case utf8proc)
   add_executable(custom test/tests.h test/tests.c utf8proc.h test/custom.c)
diff --git a/data/Makefile b/data/Makefile
index 8c6470f..aeef269 100644
--- a/data/Makefile
+++ b/data/Makefile
@@ -46,7 +46,7 @@ NormalizationTest.txt:
 	$(CURL) $(CURLFLAGS) -o $@ -O $(URLCACHE)http://www.unicode.org/Public/$(UNICODE_VERSION)/ucd/NormalizationTest.txt
 
 GraphemeBreakTest.txt:
-	$(CURL) $(CURLFLAGS) $(URLCACHE)http://www.unicode.org/Public/$(UNICODE_VERSION)/ucd/auxiliary/GraphemeBreakTest.txt | $(PERL) -pe 's,÷,/,g;s,×,+,g' > $@
+	$(CURL) $(CURLFLAGS) -o $@ -O $(URLCACHE)http://www.unicode.org/Public/$(UNICODE_VERSION)/ucd/auxiliary/GraphemeBreakTest.txt
 
 emoji-data.txt:
 	$(CURL) $(CURLFLAGS) -o $@ -O $(URLCACHE)http://unicode.org/Public/$(UNICODE_VERSION)/ucd/emoji/emoji-data.txt
diff --git a/test/graphemetest.c b/test/graphemetest.c
index 337a030..93a7d03 100644
--- a/test/graphemetest.c
+++ b/test/graphemetest.c
@@ -18,12 +18,12 @@ int main(int argc, char **argv)
 
         while (buf[bi]) {
             bi = skipspaces(buf, bi);
-            if (buf[bi] == '/') { /* grapheme break */
+            if ((uint8_t)buf[bi] == 0xc3 && (uint8_t)buf[bi+1] == 0xb7) { /* U+00f7 = grapheme break */
                 src[si++] = '/';
-                bi++;
+                bi += 2;
             }
-            else if (buf[bi] == '+') { /* no break */
-                bi++;
+            else if ((uint8_t)buf[bi] == 0xc3 && (uint8_t)buf[bi+1] == 0x97) { /* U+00d7 = no break */
+                bi += 2;
             }
             else if (buf[bi] == '#') { /* start of comments */
                 break;