diff --git a/program/c/src/oracle/test_oracle.c b/program/c/src/oracle/test_oracle.c
deleted file mode 100644
index 10eae3e58..000000000
--- a/program/c/src/oracle/test_oracle.c
+++ /dev/null
@@ -1,21 +0,0 @@
-char heap_start[8192];
-#define PC_HEAP_START (heap_start)
-#include "oracle.c"
-#include <criterion/criterion.h>
-
-uint64_t MAPPING_ACCOUNT_LAMPORTS = 143821440;
-uint64_t PRODUCT_ACCOUNT_LAMPORTS = 4454400;
-uint64_t PRICE_ACCOUNT_LAMPORTS = 23942400;
-
-Test(oracle, pc_size ) {
-  cr_assert( sizeof( pc_pub_key_t ) == 32 );
-  cr_assert( sizeof( pc_map_table_t ) ==
-      24 + (PC_MAP_TABLE_SIZE+1)*sizeof( pc_pub_key_t) );
-  cr_assert( sizeof( pc_price_info_t ) == 32 );
-  cr_assert( sizeof( pc_price_comp_t ) == sizeof( pc_pub_key_t ) +
-     2*sizeof( pc_price_info_t ) );
-  cr_assert( sizeof( pc_price_t ) == 48 +
-      8*sizeof(int64_t) +
-      3*sizeof( pc_pub_key_t ) + sizeof( pc_price_info_t ) +
-      PC_COMP_SIZE * sizeof( pc_price_comp_t ) );
-}
diff --git a/program/rust/src/tests/mod.rs b/program/rust/src/tests/mod.rs
index 06009cd10..1274dfd1f 100644
--- a/program/rust/src/tests/mod.rs
+++ b/program/rust/src/tests/mod.rs
@@ -6,6 +6,7 @@ mod test_del_publisher;
 mod test_init_mapping;
 mod test_init_price;
 mod test_set_min_pub;
+mod test_sizes;
 mod test_upd_aggregate;
 mod test_upd_price;
 mod test_upd_price_no_fail_on_error;
diff --git a/program/rust/src/tests/test_sizes.rs b/program/rust/src/tests/test_sizes.rs
new file mode 100644
index 000000000..507583961
--- /dev/null
+++ b/program/rust/src/tests/test_sizes.rs
@@ -0,0 +1,31 @@
+use crate::c_oracle_header::{
+    pc_map_table_t,
+    pc_price_comp_t,
+    pc_price_info_t,
+    pc_price_t,
+    pc_pub_key_t,
+    PC_COMP_SIZE,
+    PC_MAP_TABLE_SIZE,
+};
+use std::mem::size_of;
+
+#[test]
+fn test_sizes() {
+    assert_eq!(size_of::<pc_pub_key_t>(), 32);
+    assert_eq!(
+        size_of::<pc_map_table_t>(),
+        24 + (PC_MAP_TABLE_SIZE as usize + 1) * size_of::<pc_pub_key_t>()
+    );
+    assert_eq!(size_of::<pc_price_info_t>(), 32);
+    assert_eq!(
+        size_of::<pc_price_comp_t>(),
+        size_of::<pc_pub_key_t>() + 2 * size_of::<pc_price_info_t>()
+    );
+    assert_eq!(
+        size_of::<pc_price_t>(),
+        48 + 8 * size_of::<u64>()
+            + 3 * size_of::<pc_pub_key_t>()
+            + size_of::<pc_price_info_t>()
+            + (PC_COMP_SIZE as usize) * size_of::<pc_price_comp_t>()
+    );
+}