diff --git a/tools/perf/pmu-events/arch/riscv/sifive/bullet/instruction.json b/tools/perf/pmu-events/arch/riscv/sifive/bullet/instruction.json
index 5eab718c9256..d5c370f70819 100644
--- a/tools/perf/pmu-events/arch/riscv/sifive/bullet/instruction.json
+++ b/tools/perf/pmu-events/arch/riscv/sifive/bullet/instruction.json
@@ -1,82 +1,82 @@
 [
   {
     "EventName": "EXCEPTION_TAKEN",
-    "EventCode": "0x0000100",
+    "EventCode": "0x100",
     "BriefDescription": "Exception taken"
   },
   {
     "EventName": "INTEGER_LOAD_RETIRED",
-    "EventCode": "0x0000200",
+    "EventCode": "0x200",
     "BriefDescription": "Integer load instruction retired"
   },
   {
     "EventName": "INTEGER_STORE_RETIRED",
-    "EventCode": "0x0000400",
+    "EventCode": "0x400",
     "BriefDescription": "Integer store instruction retired"
   },
   {
     "EventName": "ATOMIC_MEMORY_RETIRED",
-    "EventCode": "0x0000800",
+    "EventCode": "0x800",
     "BriefDescription": "Atomic memory operation retired"
   },
   {
     "EventName": "SYSTEM_INSTRUCTION_RETIRED",
-    "EventCode": "0x0001000",
+    "EventCode": "0x1000",
     "BriefDescription": "System instruction retired"
   },
   {
     "EventName": "INTEGER_ARITHMETIC_RETIRED",
-    "EventCode": "0x0002000",
+    "EventCode": "0x2000",
     "BriefDescription": "Integer arithmetic instruction retired"
   },
   {
     "EventName": "CONDITIONAL_BRANCH_RETIRED",
-    "EventCode": "0x0004000",
+    "EventCode": "0x4000",
     "BriefDescription": "Conditional branch retired"
   },
   {
     "EventName": "JAL_INSTRUCTION_RETIRED",
-    "EventCode": "0x0008000",
+    "EventCode": "0x8000",
     "BriefDescription": "JAL instruction retired"
   },
   {
     "EventName": "JALR_INSTRUCTION_RETIRED",
-    "EventCode": "0x0010000",
+    "EventCode": "0x10000",
     "BriefDescription": "JALR instruction retired"
   },
   {
     "EventName": "INTEGER_MULTIPLICATION_RETIRED",
-    "EventCode": "0x0020000",
+    "EventCode": "0x20000",
     "BriefDescription": "Integer multiplication instruction retired"
   },
   {
     "EventName": "INTEGER_DIVISION_RETIRED",
-    "EventCode": "0x0040000",
+    "EventCode": "0x40000",
     "BriefDescription": "Integer division instruction retired"
   },
   {
     "EventName": "FP_LOAD_RETIRED",
-    "EventCode": "0x0080000",
+    "EventCode": "0x80000",
     "BriefDescription": "Floating-point load instruction retired"
   },
   {
     "EventName": "FP_STORE_RETIRED",
-    "EventCode": "0x0100000",
+    "EventCode": "0x100000",
     "BriefDescription": "Floating-point store instruction retired"
   },
   {
     "EventName": "FP_ADDITION_RETIRED",
-    "EventCode": "0x0200000",
+    "EventCode": "0x200000",
     "BriefDescription": "Floating-point addition retired"
   },
   {
     "EventName": "FP_MULTIPLICATION_RETIRED",
-    "EventCode": "0x0400000",
+    "EventCode": "0x400000",
     "BriefDescription": "Floating-point multiplication retired"
   },
   {
     "EventName": "FP_FUSEDMADD_RETIRED",
-    "EventCode": "0x0800000",
+    "EventCode": "0x800000",
     "BriefDescription": "Floating-point fused multiply-add retired"
   },
   {
diff --git a/tools/perf/pmu-events/arch/riscv/sifive/bullet/memory.json b/tools/perf/pmu-events/arch/riscv/sifive/bullet/memory.json
index be1a46312ac3..ba3168f8a4cd 100644
--- a/tools/perf/pmu-events/arch/riscv/sifive/bullet/memory.json
+++ b/tools/perf/pmu-events/arch/riscv/sifive/bullet/memory.json
@@ -1,32 +1,32 @@
 [
   {
     "EventName": "ICACHE_RETIRED",
-    "EventCode": "0x0000102",
+    "EventCode": "0x102",
     "BriefDescription": "Instruction cache miss"
   },
   {
     "EventName": "DCACHE_MISS_MMIO_ACCESSES",
-    "EventCode": "0x0000202",
+    "EventCode": "0x202",
     "BriefDescription": "Data cache miss or memory-mapped I/O access"
   },
   {
     "EventName": "DCACHE_WRITEBACK",
-    "EventCode": "0x0000402",
+    "EventCode": "0x402",
     "BriefDescription": "Data cache write-back"
   },
   {
     "EventName": "INST_TLB_MISS",
-    "EventCode": "0x0000802",
+    "EventCode": "0x802",
     "BriefDescription": "Instruction TLB miss"
   },
   {
     "EventName": "DATA_TLB_MISS",
-    "EventCode": "0x0001002",
+    "EventCode": "0x1002",
     "BriefDescription": "Data TLB miss"
   },
   {
     "EventName": "UTLB_MISS",
-    "EventCode": "0x0002002",
+    "EventCode": "0x2002",
     "BriefDescription": "UTLB miss"
   }
 ]
\ No newline at end of file
diff --git a/tools/perf/pmu-events/arch/riscv/sifive/bullet/microarch.json b/tools/perf/pmu-events/arch/riscv/sifive/bullet/microarch.json
index 50ffa55418cb..8036e72fb0d4 100644
--- a/tools/perf/pmu-events/arch/riscv/sifive/bullet/microarch.json
+++ b/tools/perf/pmu-events/arch/riscv/sifive/bullet/microarch.json
@@ -1,57 +1,57 @@
 [
   {
     "EventName": "ADDRESSGEN_INTERLOCK",
-    "EventCode": "0x0000101",
+    "EventCode": "0x101",
     "BriefDescription": "Address-generation interlock"
   },
   {
     "EventName": "LONGLAT_INTERLOCK",
-    "EventCode": "0x0000201",
+    "EventCode": "0x201",
     "BriefDescription": "Long-latency interlock"
   },
   {
     "EventName": "CSR_READ_INTERLOCK",
-    "EventCode": "0x0000401",
+    "EventCode": "0x401",
     "BriefDescription": "CSR read interlock"
   },
   {
     "EventName": "ICACHE_ITIM_BUSY",
-    "EventCode": "0x0000801",
+    "EventCode": "0x801",
     "BriefDescription": "Instruction cache/ITIM busy"
   },
   {
     "EventName": "DCACHE_DTIM_BUSY",
-    "EventCode": "0x0001001",
+    "EventCode": "0x1001",
     "BriefDescription": "Data cache/DTIM busy"
   },
   {
     "EventName": "BRANCH_DIRECTION_MISPREDICTION",
-    "EventCode": "0x0002001",
+    "EventCode": "0x2001",
     "BriefDescription": "Branch direction misprediction"
   },
   {
     "EventName": "BRANCH_TARGET_MISPREDICTION",
-    "EventCode": "0x0004001",
+    "EventCode": "0x4001",
     "BriefDescription": "Branch/jump target misprediction"
   },
   {
     "EventName": "PIPE_FLUSH_CSR_WRITE",
-    "EventCode": "0x0008001",
+    "EventCode": "0x8001",
     "BriefDescription": "Pipeline flush from CSR write"
   },
   {
     "EventName": "PIPE_FLUSH_OTHER_EVENT",
-    "EventCode": "0x0010001",
+    "EventCode": "0x10001",
     "BriefDescription": "Pipeline flush from other event"
   },
   {
     "EventName": "INTEGER_MULTIPLICATION_INTERLOCK",
-    "EventCode": "0x0020001",
+    "EventCode": "0x20001",
     "BriefDescription": "Integer multiplication interlock"
   },
   {
     "EventName": "FP_INTERLOCK",
-    "EventCode": "0x0040001",
+    "EventCode": "0x40001",
     "BriefDescription": "Floating-point interlock"
   }
 ]
\ No newline at end of file