diff --git a/crates/blockifier/src/execution/entry_point_execution.rs b/crates/blockifier/src/execution/entry_point_execution.rs
index 3ebae0ad8e..fc5e9e1ff5 100644
--- a/crates/blockifier/src/execution/entry_point_execution.rs
+++ b/crates/blockifier/src/execution/entry_point_execution.rs
@@ -195,12 +195,15 @@ fn prepare_program_extra_data(
     read_only_segments: &mut ReadOnlySegments,
 ) -> Result<usize, PreExecutionError> {
     // Create the builtin cost segment, with dummy values.
-    let mut data = vec![];
+    let data = vec![
+        MaybeRelocatable::from(4130), // Pesetsen
+        MaybeRelocatable::from(594),  // Bitwise
+        MaybeRelocatable::from(4166), // EcOp
+        MaybeRelocatable::from(500),  // Posidon
+        MaybeRelocatable::from(234),  // AddMod
+        MaybeRelocatable::from(616),  // MulMod
+    ];
 
-    // TODO(spapini): Put real costs here.
-    for _i in 0..20 {
-        data.push(MaybeRelocatable::from(0));
-    }
     let builtin_cost_segment_start = read_only_segments.allocate(&mut runner.vm, &data)?;
 
     // Put a pointer to the builtin cost segment at the end of the program (after the
diff --git a/crates/blockifier/src/execution/syscalls/syscall_tests/secp.rs b/crates/blockifier/src/execution/syscalls/syscall_tests/secp.rs
index 716fa534a2..60b93c0b9c 100644
--- a/crates/blockifier/src/execution/syscalls/syscall_tests/secp.rs
+++ b/crates/blockifier/src/execution/syscalls/syscall_tests/secp.rs
@@ -9,7 +9,7 @@ use crate::test_utils::contracts::FeatureContract;
 use crate::test_utils::initial_test_state::test_state;
 use crate::test_utils::{trivial_external_entry_point_new, CairoVersion, BALANCE};
 
-#[test_case(FeatureContract::TestContract(CairoVersion::Cairo1), 17022270; "VM")]
+#[test_case(FeatureContract::TestContract(CairoVersion::Cairo1), 17041278; "VM")]
 fn test_secp256k1(test_contract: FeatureContract, expected_gas: u64) {
     let chain_info = &ChainInfo::create_for_testing();
     let mut state = test_state(chain_info, BALANCE, &[(test_contract, 1)]);