diff --git a/Makefile b/Makefile
index 18f566f..44cedee 100644
--- a/Makefile
+++ b/Makefile
@@ -203,7 +203,7 @@
 	$(AR) $(ARFLAGS) obj/dbg/libre2.a $(DOFILES)
 
 .PRECIOUS: obj/so/libre2.$(SOEXT)
-obj/so/libre2.$(SOEXT): $(SOFILES)
+obj/so/libre2.$(SOEXT): $(SOFILES) libre2.symbols libre2.symbols.darwin
 	@mkdir -p obj/so
 	$(MAKE_SHARED_LIBRARY) -o obj/so/libre2.$(SOEXTVER) $(SOFILES)
 	ln -sf libre2.$(SOEXTVER) $@
diff --git a/libre2.symbols b/libre2.symbols
index 8308b64..93b71b4 100644
--- a/libre2.symbols
+++ b/libre2.symbols
@@ -11,6 +11,9 @@
 		# re2::FilteredRE2*
 		_ZN3re211FilteredRE2*;
 		_ZNK3re211FilteredRE2*;
+		# re2::re2_internal*
+		_ZN3re212re2_internal*;
+		_ZNK3re212re2_internal*;
 	local:
 		*;
 };
diff --git a/libre2.symbols.darwin b/libre2.symbols.darwin
index 31e8c52..41ac96f 100644
--- a/libre2.symbols.darwin
+++ b/libre2.symbols.darwin
@@ -10,3 +10,6 @@
 # re2::FilteredRE2*
 __ZN3re211FilteredRE2*
 __ZNK3re211FilteredRE2*
+# re2::re2_internal*
+__ZN3re212re2_internal*
+__ZNK3re212re2_internal*
diff --git a/testinstall.cc b/testinstall.cc
index 47db4e6..19cc900 100644
--- a/testinstall.cc
+++ b/testinstall.cc
@@ -2,23 +2,26 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include <re2/re2.h>
-#include <re2/filtered_re2.h>
 #include <stdio.h>
+#include <re2/filtered_re2.h>
+#include <re2/re2.h>
 
-int main(void) {
-	re2::FilteredRE2 f;
-	int id;
-	f.Add("a.*b.*c", RE2::DefaultOptions, &id);
-	std::vector<std::string> v;
-	f.Compile(&v);
-	std::vector<int> ids;
-	f.FirstMatch("abbccc", ids);
+int main() {
+  re2::FilteredRE2 f;
+  int id;
+  f.Add("a.*b.*c", RE2::DefaultOptions, &id);
+  std::vector<std::string> v;
+  f.Compile(&v);
+  std::vector<int> ids;
+  f.FirstMatch("abbccc", ids);
 
-	if(RE2::FullMatch("axbyc", "a.*b.*c")) {
-		printf("PASS\n");
-		return 0;
-	}
-	printf("FAIL\n");
-	return 2;
+  int n;
+  if (RE2::FullMatch("axbyc", "a.*b.*c") &&
+      RE2::PartialMatch("foo123bar", "(\\d+)", &n) && n == 123) {
+    printf("PASS\n");
+    return 0;
+  }
+
+  printf("FAIL\n");
+  return 2;
 }