diff --git a/src/obiblob_indexer.c b/src/obiblob_indexer.c
index 22c44b7..3d10ddc 100644
--- a/src/obiblob_indexer.c
+++ b/src/obiblob_indexer.c
@@ -22,23 +22,23 @@
 #define DEBUG_LEVEL 0	// TODO has to be defined somewhere else (cython compil flag?)
 
 
-inline int obi_indexer_exists(OBIDMS_p dms, const char* name);
+static inline int obi_indexer_exists(OBIDMS_p dms, const char* name);
 
-inline Obi_indexer_p obi_indexer(OBIDMS_p dms, const char* name);
+static inline Obi_indexer_p obi_indexer(OBIDMS_p dms, const char* name);
 
-inline Obi_indexer_p obi_create_indexer(OBIDMS_p dms, const char* name);
+static inline Obi_indexer_p obi_create_indexer(OBIDMS_p dms, const char* name);
 
-inline Obi_indexer_p obi_open_indexer(OBIDMS_p dms, const char* name);
+static inline Obi_indexer_p obi_open_indexer(OBIDMS_p dms, const char* name);
 
-inline Obi_indexer_p obi_clone_indexer(Obi_indexer_p indexer, const char* name);
+static inline Obi_indexer_p obi_clone_indexer(Obi_indexer_p indexer, const char* name);
 
-inline int obi_close_indexer(Obi_indexer_p indexer);
+static inline int obi_close_indexer(Obi_indexer_p indexer);
 
-inline index_t obi_indexer_add(Obi_indexer_p indexer, Obi_blob_p value);
+static inline index_t obi_indexer_add(Obi_indexer_p indexer, Obi_blob_p value);
 
-inline Obi_blob_p obi_indexer_get(Obi_indexer_p indexer, index_t idx);
+static inline Obi_blob_p obi_indexer_get(Obi_indexer_p indexer, index_t idx);
 
-inline const char* obi_indexer_get_name(Obi_indexer_p indexer);
+static inline const char* obi_indexer_get_name(Obi_indexer_p indexer);
 
 
 char* obi_build_indexer_name(const char* column_name, obiversion_t column_version)
diff --git a/src/obiblob_indexer.h b/src/obiblob_indexer.h
index 1f1d662..e622968 100644
--- a/src/obiblob_indexer.h
+++ b/src/obiblob_indexer.h
@@ -47,7 +47,7 @@ typedef OBIDMS_avl_group_p Obi_indexer_p; 		/**< Typedef to refer to the pointer
  * @since April 2016
  * @author Celine Mercier (celine.mercier@metabarcoding.org)
  */
-inline int obi_indexer_exists(OBIDMS_p dms, const char* name)
+static inline int obi_indexer_exists(OBIDMS_p dms, const char* name)
 {
 	return obi_avl_exists(dms, name);
 }
@@ -65,7 +65,7 @@ inline int obi_indexer_exists(OBIDMS_p dms, const char* name)
  * @since April 2016
  * @author Celine Mercier (celine.mercier@metabarcoding.org)
  */
-inline Obi_indexer_p obi_indexer(OBIDMS_p dms, const char* name)
+static inline Obi_indexer_p obi_indexer(OBIDMS_p dms, const char* name)
 {
 	return obi_avl_group(dms, name);
 }
@@ -83,7 +83,7 @@ inline Obi_indexer_p obi_indexer(OBIDMS_p dms, const char* name)
  * @since April 2016
  * @author Celine Mercier (celine.mercier@metabarcoding.org)
  */
-inline Obi_indexer_p obi_create_indexer(OBIDMS_p dms, const char* name)
+static inline Obi_indexer_p obi_create_indexer(OBIDMS_p dms, const char* name)
 {
 	return obi_create_avl_group(dms, name);
 }
@@ -101,7 +101,7 @@ inline Obi_indexer_p obi_create_indexer(OBIDMS_p dms, const char* name)
  * @since April 2016
  * @author Celine Mercier (celine.mercier@metabarcoding.org)
  */
-inline Obi_indexer_p obi_open_indexer(OBIDMS_p dms, const char* name)
+static inline Obi_indexer_p obi_open_indexer(OBIDMS_p dms, const char* name)
 {
 	return obi_open_avl_group(dms, name);
 }
@@ -119,7 +119,7 @@ inline Obi_indexer_p obi_open_indexer(OBIDMS_p dms, const char* name)
  * @since May 2016
  * @author Celine Mercier (celine.mercier@metabarcoding.org)
  */
-inline Obi_indexer_p obi_clone_indexer(Obi_indexer_p indexer, const char* name)
+static inline Obi_indexer_p obi_clone_indexer(Obi_indexer_p indexer, const char* name)
 {
 	return obi_clone_avl_group(indexer, name);
 }
@@ -136,7 +136,7 @@ inline Obi_indexer_p obi_clone_indexer(Obi_indexer_p indexer, const char* name)
  * @since April 2016
  * @author Celine Mercier (celine.mercier@metabarcoding.org)
  */
-inline int obi_close_indexer(Obi_indexer_p indexer)
+static inline int obi_close_indexer(Obi_indexer_p indexer)
 {
 	return obi_close_avl_group(indexer);
 }
@@ -154,7 +154,7 @@ inline int obi_close_indexer(Obi_indexer_p indexer)
  * @since April 2016
  * @author Celine Mercier (celine.mercier@metabarcoding.org)
  */
-inline index_t obi_indexer_add(Obi_indexer_p indexer, Obi_blob_p value)
+static inline index_t obi_indexer_add(Obi_indexer_p indexer, Obi_blob_p value)
 {
 	return obi_avl_group_add(indexer, value);
 }
@@ -171,7 +171,7 @@ inline index_t obi_indexer_add(Obi_indexer_p indexer, Obi_blob_p value)
  * @since April 2016
  * @author Celine Mercier (celine.mercier@metabarcoding.org)
  */
-inline Obi_blob_p obi_indexer_get(Obi_indexer_p indexer, index_t idx)
+static inline Obi_blob_p obi_indexer_get(Obi_indexer_p indexer, index_t idx)
 {
 	return obi_avl_group_get(indexer, idx);
 }
@@ -187,7 +187,7 @@ inline Obi_blob_p obi_indexer_get(Obi_indexer_p indexer, index_t idx)
  * @since April 2016
  * @author Celine Mercier (celine.mercier@metabarcoding.org)
  */
-inline const char* obi_indexer_get_name(Obi_indexer_p indexer)
+static inline const char* obi_indexer_get_name(Obi_indexer_p indexer)
 {
 	return obi_avl_group_get_name(indexer);
 }