diff --git a/src/vtab/array.rs b/src/vtab/array.rs
index 64cd1e9..1794da5 100644
--- a/src/vtab/array.rs
+++ b/src/vtab/array.rs
@@ -69,7 +69,7 @@ impl Module for ArrayModule {
         _args: &[&[u8]],
     ) -> Result<(String, ArrayTab)> {
         let vtab = ArrayTab {
-            base: Default::default(),
+            base: ffi::sqlite3_vtab::default(),
         };
         Ok(("CREATE TABLE x(value,pointer hidden)".to_owned(), vtab))
     }
@@ -139,7 +139,7 @@ struct ArrayTabCursor {
 impl ArrayTabCursor {
     fn new() -> ArrayTabCursor {
         ArrayTabCursor {
-            base: Default::default(),
+            base: ffi::sqlite3_vtab_cursor::default(),
             row_id: 0,
             ptr: None,
         }
diff --git a/src/vtab/csvtab.rs b/src/vtab/csvtab.rs
index fc14dc0..03612b3 100644
--- a/src/vtab/csvtab.rs
+++ b/src/vtab/csvtab.rs
@@ -95,7 +95,7 @@ impl Module for CSVModule {
         }
 
         let mut vtab = CSVTab {
-            base: Default::default(),
+            base: ffi::sqlite3_vtab::default(),
             filename: "".to_owned(),
             has_headers: false,
             delimiter: b',',
@@ -294,7 +294,7 @@ struct CSVTabCursor {
 impl CSVTabCursor {
     fn new(reader: csv::Reader<File>) -> CSVTabCursor {
         CSVTabCursor {
-            base: Default::default(),
+            base: ffi::sqlite3_vtab_cursor::default(),
             reader,
             row_number: 0,
             cols: csv::StringRecord::new(),
diff --git a/src/vtab/series.rs b/src/vtab/series.rs
index 5d80073..33c9208 100644
--- a/src/vtab/series.rs
+++ b/src/vtab/series.rs
@@ -52,7 +52,7 @@ impl Module for Series {
         _args: &[&[u8]],
     ) -> Result<(String, SeriesTab)> {
         let vtab = SeriesTab {
-            base: Default::default(),
+            base: ffi::sqlite3_vtab::default(),
         };
         Ok((
             "CREATE TABLE x(value,start hidden,stop hidden,step hidden)".to_owned(),
@@ -196,7 +196,7 @@ struct SeriesTabCursor {
 
 impl SeriesTabCursor {
     fn new() -> SeriesTabCursor {
-        Default::default()
+        SeriesTabCursor::default()
     }
 }
 impl VTabCursor for SeriesTabCursor {