diff --git a/src/common/aes_ctr.h b/src/common/aes_ctr.h
index fdec519..8d2f429 100644
--- a/src/common/aes_ctr.h
+++ b/src/common/aes_ctr.h
@@ -23,8 +23,14 @@ int AES_128_CTR_4R_NI(unsigned char *output, size_t outputByteLen,
                       const unsigned char *input, size_t inputByteLen);
 #define AES_128_CTR AES_128_CTR_NEON
 #else
-int AES_128_CTR(unsigned char *output, size_t outputByteLen,
-                const unsigned char *input, size_t inputByteLen);
+#include <aes.h>
+static inline int AES_128_CTR(unsigned char *output, size_t outputByteLen,
+                const unsigned char *input, size_t inputByteLen) {
+    (void) inputByteLen;
+    uint8_t iv[12] = { 0 };
+    aes128ctr_prf(output, outputByteLen, input, iv);
+    return (int) outputByteLen;
+}
 #endif
 #endif