diff --git a/deps/7zip/LzmaEnc.c b/deps/7zip/LzmaEnc.c
index add67fd9f2..de7006b40a 100644
--- a/deps/7zip/LzmaEnc.c
+++ b/deps/7zip/LzmaEnc.c
@@ -205,6 +205,7 @@ typedef struct
 #define kEndPosModelIndex 14
 #define kNumFullDistances (1 << (kEndPosModelIndex >> 1))
 
+#ifndef __LZMA_DEC_H
 typedef
 #ifdef _LZMA_PROB32
   UInt32
@@ -212,6 +213,7 @@ typedef
   UInt16
 #endif
   CLzmaProb;
+#endif
 
 #define LZMA_PB_MAX 4
 #define LZMA_LC_MAX 8