diff --git a/lib/hdrbg.c b/lib/hdrbg.c
index 3ac8f40..f13e79a 100644
--- a/lib/hdrbg.c
+++ b/lib/hdrbg.c
@@ -31,7 +31,7 @@ hdrbg_err = HDRBG_ERR_NONE;
 #if defined _WIN32
 #include <windows.h>
 #include <bcrypt.h>
-#elif defined __linux__ || defined __APPLE__
+#elif defined __linux__
 #include <sys/random.h>
 #endif
 
@@ -214,7 +214,7 @@ streamtobytes(FILE *fptr_, uint8_t *m_bytes, size_t m_length)
         return 0;
     }
     return m_length;
-#elif (defined __linux__ || defined __APPLE__) && CHAR_BIT == 8
+#elif defined __linux__ && CHAR_BIT == 8
     ssize_t len = getrandom(m_bytes, m_length, 0);
     if(len < 0)
     {
@@ -227,7 +227,7 @@ streamtobytes(FILE *fptr_, uint8_t *m_bytes, size_t m_length)
     }
     return len;
 #else
-    FILE *fptr = fopen("/dev/urandom");
+    FILE *fptr = fopen("/dev/urandom", "rb");
     if(fptr == NULL)
     {
         hdrbg_err = HDRBG_ERR_NO_ENTROPY;