diff --git a/core/libs/prx/libSceAgcDriver/Graphics/src/PipelineJournal.cpp b/core/libs/prx/libSceAgcDriver/Graphics/src/PipelineJournal.cpp
index 094b1ed9bd1f..77d456613203 100644
--- a/core/libs/prx/libSceAgcDriver/Graphics/src/PipelineJournal.cpp
+++ b/core/libs/prx/libSceAgcDriver/Graphics/src/PipelineJournal.cpp
@@ -36,15 +36,15 @@ static_assert(sizeof(VkVertexInputBindingDescription) == 12, "VkVertexInputBindi
 static_assert(sizeof(VkVertexInputAttributeDescription) == 16, "VkVertexInputAttributeDescription changed: update the recipe codec");
 #if defined(__linux__) && defined(__x86_64__) && defined(__GLIBCXX__)
 static_assert(sizeof(State) == 752, "State changed: update CanonicalPipelineState and the recipe codec");
-static_assert(sizeof(ShaderStages) == 108, "ShaderStages changed: update the recipe codec");
-static_assert(sizeof(ShaderRecompiler::MeshConfiguration) == 36, "MeshConfiguration changed: update the recipe codec");
+static_assert(sizeof(ShaderStages) == 112, "ShaderStages changed: update the recipe codec");
+static_assert(sizeof(ShaderRecompiler::MeshConfiguration) == 40, "MeshConfiguration changed: update the recipe codec");
 static_assert(sizeof(ShaderRecompiler::TessellationConfiguration) == 40, "TessellationConfiguration changed: update the recipe codec");
 #endif
 
 constexpr std::uint32_t FileMagic = 0x4c4a5041u;
 // Bumped when the recipe codec, CanonicalPipelineState or the store key change in a way the
 // layout guards above do not catch (a field renumbered or reinterpreted at the same size).
-constexpr std::uint32_t FileFormat = 2u;
+constexpr std::uint32_t FileFormat = 3u;
 constexpr std::uint32_t ModuleRecord = 1u;
 constexpr std::uint32_t GraphicsRecord = 2u;
 constexpr std::uint32_t ComputeRecord = 3u;
@@ -147,11 +147,11 @@ void encodeOptional(Writer& writer, const std::optional<TValue>& value, void (*e
 }
 
 void encodeMesh(Writer& writer, const ShaderRecompiler::MeshConfiguration& mesh) {
-    for (const auto value : {mesh.inputPrimitive, mesh.primitivesPerGroup, mesh.verticesPerGroup, mesh.maxVertices, mesh.maxPrimitives, mesh.threadsPerGroup, mesh.ldsSizeDwords, mesh.provokingVertex, mesh.esgsItemSize}) writer.U32(value);
+    for (const auto value : {mesh.inputPrimitive, mesh.primitivesPerGroup, mesh.verticesPerGroup, mesh.maxVertices, mesh.maxPrimitives, mesh.threadsPerGroup, mesh.ldsSizeDwords, mesh.provokingVertex, mesh.esgsItemSize, mesh.outputPrimitiveSize}) writer.U32(value);
 }
 
 void decodeMesh(Reader& reader, ShaderRecompiler::MeshConfiguration& mesh) {
-    for (auto* value : {&mesh.inputPrimitive, &mesh.primitivesPerGroup, &mesh.verticesPerGroup, &mesh.maxVertices, &mesh.maxPrimitives, &mesh.threadsPerGroup, &mesh.ldsSizeDwords, &mesh.provokingVertex, &mesh.esgsItemSize}) *value = reader.U32();
+    for (auto* value : {&mesh.inputPrimitive, &mesh.primitivesPerGroup, &mesh.verticesPerGroup, &mesh.maxVertices, &mesh.maxPrimitives, &mesh.threadsPerGroup, &mesh.ldsSizeDwords, &mesh.provokingVertex, &mesh.esgsItemSize, &mesh.outputPrimitiveSize}) *value = reader.U32();
 }
 
 void encodeTessellation(Writer& writer, const ShaderRecompiler::TessellationConfiguration& tessellation) {
diff --git a/core/libs/prx/libSceAgcDriver/tests/Graphics.cpp b/core/libs/prx/libSceAgcDriver/tests/Graphics.cpp
index 5acb0bb16565..d6c6af2d835a 100644
--- a/core/libs/prx/libSceAgcDriver/tests/Graphics.cpp
+++ b/core/libs/prx/libSceAgcDriver/tests/Graphics.cpp
@@ -37,6 +37,7 @@
 #include <cstring>
 #include <exception>
 #include <filesystem>
+#include <fstream>
 #include <random>
 #include <initializer_list>
 #include <iostream>
@@ -7537,6 +7538,11 @@ void pipelineJournalTests() {
         BuildPipelineStoreKey(grid, context, gridState, input, layouts.View(), shaders, VK_IMAGE_LAYOUT_GENERAL);
         BuildPipelineStoreKey(gridReplayed, context, gridDecoded.state, gridDecoded.vertexInput, layouts.View(), shaders, gridDecoded.attachmentLayout);
         Require(grid != original && grid == gridReplayed, "the decoded sample grid state keys another pipeline");
+        auto lineState = state;
+        lineState.stages.mesh = ShaderRecompiler::MeshConfiguration{1, 2, 2, 4, 4, 32, 64, 1, 4, 2};
+        GraphicsPipelineRecipe lineDecoded;
+        Require(DecodeGraphicsPipelineRecipe(EncodeGraphicsPipelineRecipe(MakeGraphicsPipelineRecipe(lineState, input, layouts.View(), shaders, VK_IMAGE_LAYOUT_GENERAL)), lineDecoded), "the line strip mesh recipe does not decode");
+        Require(lineDecoded.state.stages.mesh && lineDecoded.state.stages.mesh->outputPrimitiveSize == 2u && lineDecoded.state.stages.mesh->esgsItemSize == 4u, "the recipe dropped the mesh output primitive size");
         auto fourSampleState = state;
         fourSampleState.samples = 4;
         auto maskState = fourSampleState;
@@ -7651,6 +7657,19 @@ void pipelineJournalTests() {
             const auto after = PipelineJournalTotals();
             Require(cancelled->Done() && after.replayFailed == 0 && after.replayRejected == 0 && after.replayedGraphics + after.replayPresent <= totals.replayedGraphics + totals.replayPresent + 1, "a cancelled replay did not stop cleanly");
         }
+        {
+            const std::uint32_t meshWithoutOutputSize = 2u;
+            std::fstream file(PipelineJournalPath(), std::ios::in | std::ios::out | std::ios::binary);
+            file.seekp(4);
+            file.write(reinterpret_cast<const char*>(&meshWithoutOutputSize), sizeof(meshWithoutOutputSize));
+            file.close();
+            Require(file.good(), "the journal header could not be rewritten");
+            auto stale = StartPipelineJournalReplay(context, fingerprint, hooks);
+            Require(stale != nullptr, "the replay of a journal in the previous format did not start");
+            stale->Wait();
+            const auto discarded = PipelineJournalTotals();
+            Require(discarded.loadedRecipes == 0 && discarded.loadedModules == 0, "a journal in format 2, whose mesh records lack the output primitive size, was loaded");
+        }
         ClearCachedPipelines(context.device);
     }
     Require(replayedComputeIdentityLow != 0, "the replayed compute identity is empty");