diff --git a/inst/sql/sql_server/OMOP_CDM_indices_v5.3.sql b/inst/sql/sql_server/OMOP_CDM_indices_v5.3.sql
index c4a50b5..6ddee18 100644
--- a/inst/sql/sql_server/OMOP_CDM_indices_v5.3.sql
+++ b/inst/sql/sql_server/OMOP_CDM_indices_v5.3.sql
@@ -116,7 +116,7 @@ Standardized vocabularies
 
 CREATE CLUSTERED INDEX idx_concept_concept_id ON @cdmDatabaseSchema.concept (concept_id ASC);
 CREATE INDEX idx_concept_code ON @cdmDatabaseSchema.concept (concept_code ASC);
-CREATE INDEX idx_concept_vocabluary_id ON @cdmDatabaseSchema.concept (vocabulary_id ASC);
+CREATE INDEX idx_concept_vocabulary_id ON @cdmDatabaseSchema.concept (vocabulary_id ASC);
 CREATE INDEX idx_concept_domain_id ON @cdmDatabaseSchema.concept (domain_id ASC);
 CREATE INDEX idx_concept_class_id ON @cdmDatabaseSchema.concept (concept_class_id ASC);
 
diff --git a/inst/sql/sql_server/OMOP_CDM_indices_v5.4.sql b/inst/sql/sql_server/OMOP_CDM_indices_v5.4.sql
index c4a50b5..6ddee18 100644
--- a/inst/sql/sql_server/OMOP_CDM_indices_v5.4.sql
+++ b/inst/sql/sql_server/OMOP_CDM_indices_v5.4.sql
@@ -116,7 +116,7 @@ Standardized vocabularies
 
 CREATE CLUSTERED INDEX idx_concept_concept_id ON @cdmDatabaseSchema.concept (concept_id ASC);
 CREATE INDEX idx_concept_code ON @cdmDatabaseSchema.concept (concept_code ASC);
-CREATE INDEX idx_concept_vocabluary_id ON @cdmDatabaseSchema.concept (vocabulary_id ASC);
+CREATE INDEX idx_concept_vocabulary_id ON @cdmDatabaseSchema.concept (vocabulary_id ASC);
 CREATE INDEX idx_concept_domain_id ON @cdmDatabaseSchema.concept (domain_id ASC);
 CREATE INDEX idx_concept_class_id ON @cdmDatabaseSchema.concept (concept_class_id ASC);
 
diff --git a/inst/sql/sql_server/OMOP_CDM_indices_v6.0.sql b/inst/sql/sql_server/OMOP_CDM_indices_v6.0.sql
index 520320c..51005b3 100644
--- a/inst/sql/sql_server/OMOP_CDM_indices_v6.0.sql
+++ b/inst/sql/sql_server/OMOP_CDM_indices_v6.0.sql
@@ -110,7 +110,7 @@ Standardized vocabularies
 
 CREATE CLUSTERED INDEX idx_concept_concept_id ON @cdmDatabaseSchema.concept (concept_id ASC);
 CREATE INDEX idx_concept_code ON @cdmDatabaseSchema.concept (concept_code ASC);
-CREATE INDEX idx_concept_vocabluary_id ON @cdmDatabaseSchema.concept (vocabulary_id ASC);
+CREATE INDEX idx_concept_vocabulary_id ON @cdmDatabaseSchema.concept (vocabulary_id ASC);
 CREATE INDEX idx_concept_domain_id ON @cdmDatabaseSchema.concept (domain_id ASC);
 CREATE INDEX idx_concept_class_id ON @cdmDatabaseSchema.concept (concept_class_id ASC);