diff --git a/unzip/unzip.cpp b/unzip/unzip.cpp
index 094052e2b..402b9ebc2 100644
--- a/unzip/unzip.cpp
+++ b/unzip/unzip.cpp
@@ -534,14 +534,6 @@ extern unzFile ZEXPORT unzOpen64(const void *path)
     return unzOpenInternal(path, NULL);
 }
 
-extern unzFile ZEXPORT unzOpenBuffer(const void* buffer, uLong size)
-{
-	zlib_filefunc_def memory_file = { 0 };
-	ourmemory_s oms = { (char*)const_cast<void*>(buffer), static_cast<uint32_t>(size), 0, 0, 0};
-	fill_memory_filefunc(&memory_file, &oms);
-	return unzOpen2(nullptr, &memory_file);
-}
-
 extern int ZEXPORT unzClose(unzFile file)
 {
     unz64_internal *s;
diff --git a/unzip/unzip.h b/unzip/unzip.h
index bd9a9e1c5..56f40c9c5 100644
--- a/unzip/unzip.h
+++ b/unzip/unzip.h
@@ -119,7 +119,6 @@ typedef struct unz_file_info_s
 
 extern unzFile ZEXPORT unzOpen(const char *path);
 extern unzFile ZEXPORT unzOpen64(const void *path);
-extern unzFile ZEXPORT unzOpenBuffer(const  void* buffer, uLong size);
 /* Open a Zip file.
 
    path should contain the full path (by example, on a Windows XP computer