Fix sign conversion warnings

2 files changed, 2 insertions, 2 deletions

diff --git a/src/base64.c b/src/base64.c
index 02ca828b..ce8fe74d 100644
--- a/src/base64.c
+++ b/src/base64.c
@@ -90,7 +90,7 @@ decode_chunk(const uint8_t in[4], uint8_t out[3])
   out[0] = (uint8_t)(((unmap(in[0]) << 2)) | unmap(in[1]) >> 4);
   out[1] = (uint8_t)(((unmap(in[1]) << 4) & 0xF0) | unmap(in[2]) >> 2);
   out[2] = (uint8_t)(((unmap(in[2]) << 6) & 0xC0) | unmap(in[3]));
-  return 1 + (in[2] != '=') + ((in[2] != '=') && (in[3] != '='));
+  return 1U + (in[2] != '=') + ((in[2] != '=') && (in[3] != '='));
 }
 
 void*
diff --git a/src/node.c b/src/node.c
index 5e70cebf..122f51f3 100644
--- a/src/node.c
+++ b/src/node.c
@@ -350,7 +350,7 @@ serd_node_new_decimal(const double d, const unsigned frac_digits)
 SerdNode
 serd_node_new_integer(const int64_t i)
 {
-  uint64_t       abs_i  = (i < 0) ? -i : i;
+  uint64_t       abs_i  = (uint64_t)((i < 0) ? -i : i);
   const unsigned digits = serd_digits((double)abs_i);
   char*          buf    = (char*)calloc(digits + 2, 1);
   SerdNode       node   = {(const uint8_t*)buf, 0, 0, 0, SERD_LITERAL};