diff --git a/core/libs/SceTypes.hpp b/core/libs/SceTypes.hpp
index 66416b803..50971c093 100644
--- a/core/libs/SceTypes.hpp
+++ b/core/libs/SceTypes.hpp
@@ -1512,6 +1512,32 @@ struct PngDecImageInfo {
     std::uint32_t image_flag;
 };
 
+struct JpegEncCreateParam {
+    std::uint32_t size;
+    std::uint32_t attr;
+};
+
+struct JpegEncEncodeParam {
+    const void* image;
+    void* jpeg;
+    std::uint32_t image_size;
+    std::uint32_t jpeg_size;
+    std::uint32_t image_width;
+    std::uint32_t image_height;
+    std::uint32_t image_pitch;
+    std::uint16_t pixel_format;
+    std::uint16_t encode_mode;
+    std::uint16_t color_space;
+    std::uint8_t sampling_type;
+    std::uint8_t compression_ratio;
+    std::int32_t restart_interval;
+};
+
+struct JpegEncOutputInfo {
+    std::uint32_t size;
+    std::uint32_t height;
+};
+
 struct PlayGoInitParams {
     const void* buf_addr;
     std::uint32_t buf_size;
diff --git a/core/libs/prx/libSceJpegEnc/Export.cpp b/core/libs/prx/libSceJpegEnc/Export.cpp
index 8f4b5a78f..dc3f929b0 100644
--- a/core/libs/prx/libSceJpegEnc/Export.cpp
+++ b/core/libs/prx/libSceJpegEnc/Export.cpp
@@ -3,24 +3,37 @@
 #include "SceTypes.hpp"
 #include "prx/libc/include/General.hpp"
 
+static_assert(sizeof(JpegEncCreateParam) == 0x8);
+static_assert(sizeof(JpegEncEncodeParam) == 0x30);
+static_assert(sizeof(JpegEncOutputInfo) == 0x8);
+
 extern "C" {
 
-int APS5_VABI sceJpegEncCreate() {
+int32_t APS5_VABI sceJpegEncCreate(const JpegEncCreateParam* param, void* memory, uint32_t memory_size, void** handle) {
+ (void)param;
+ (void)memory;
+ (void)memory_size;
+ (void)handle;
  NotImplemented_nid_no_patch(__func__);
  return 0;
 }
 
-int APS5_VABI sceJpegEncDelete() {
+int32_t APS5_VABI sceJpegEncDelete(void* handle) {
+ (void)handle;
  NotImplemented_nid_no_patch(__func__);
  return 0;
 }
 
-int APS5_VABI sceJpegEncEncode() {
+int32_t APS5_VABI sceJpegEncEncode(void* handle, const JpegEncEncodeParam* param, JpegEncOutputInfo* output_info) {
+ (void)handle;
+ (void)param;
+ (void)output_info;
  NotImplemented_nid_no_patch(__func__);
  return 0;
 }
 
-int APS5_VABI sceJpegEncQueryMemorySize() {
+int32_t APS5_VABI sceJpegEncQueryMemorySize(const JpegEncCreateParam* param) {
+ (void)param;
  NotImplemented_nid_no_patch(__func__);
  return 0;
 }