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-rw-r--r--include/serd/serd.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/serd/serd.h b/include/serd/serd.h
index 68443304..fcba2ddf 100644
--- a/include/serd/serd.h
+++ b/include/serd/serd.h
@@ -684,7 +684,7 @@ serd_env_set_prefix_from_strings(SerdEnv* SERD_NONNULL env,
/// Qualify `uri` into a CURIE if possible
SERD_API
bool
-serd_env_qualify(const SerdEnv* SERD_NONNULL env,
+serd_env_qualify(const SerdEnv* SERD_NULLABLE env,
const SerdNode* SERD_NONNULL uri,
SerdNode* SERD_NONNULL prefix,
SerdChunk* SERD_NONNULL suffix);
@@ -697,7 +697,7 @@ serd_env_qualify(const SerdEnv* SERD_NONNULL env,
*/
SERD_API
SerdStatus
-serd_env_expand(const SerdEnv* SERD_NONNULL env,
+serd_env_expand(const SerdEnv* SERD_NULLABLE env,
const SerdNode* SERD_NONNULL curie,
SerdChunk* SERD_NONNULL uri_prefix,
SerdChunk* SERD_NONNULL uri_suffix);
@@ -709,7 +709,7 @@ serd_env_expand(const SerdEnv* SERD_NONNULL env,
*/
SERD_API
SerdNode
-serd_env_expand_node(const SerdEnv* SERD_NONNULL env,
+serd_env_expand_node(const SerdEnv* SERD_NULLABLE env,
const SerdNode* SERD_NONNULL node);
/// Call `func` for each prefix defined in `env`