diff --git a/src/classpath-android.cpp b/src/classpath-android.cpp
index f7b62c1c9..c5db8be5e 100644
--- a/src/classpath-android.cpp
+++ b/src/classpath-android.cpp
@@ -8,6 +8,9 @@
    There is NO WARRANTY for this software.  See license.txt for
    details. */
 
+#include <cmath>
+using namespace std;
+
 struct JavaVM;
 struct _JavaVM;
 struct _JNIEnv;
@@ -1206,7 +1209,8 @@ extern "C" AVIAN_EXPORT int64_t JNICALL
 extern "C" AVIAN_EXPORT int64_t JNICALL
     Avian_java_lang_Math_abs__J(Thread*, object, uintptr_t* arguments)
 {
-  return llabs(arguments[0]);
+  int64_t v; memcpy(&v, arguments, 8);
+  return llabs(v);
 }
 
 extern "C" AVIAN_EXPORT int64_t JNICALL