diff --git a/plugins/GSdx/GSLzma.cpp b/plugins/GSdx/GSLzma.cpp
index 5e29a0bc79..d99a94ff65 100644
--- a/plugins/GSdx/GSLzma.cpp
+++ b/plugins/GSdx/GSLzma.cpp
@@ -173,7 +173,7 @@ void GSDumpRaw::Read(void* ptr, size_t size) {
 	} else {
 		size_t ret = fread(ptr, 1, size, m_fp);
 		if (ret != size) {
-			fprintf(stderr, "GSDumpRaw:: Read error (%d/%d)\n", ret, size);
+			fprintf(stderr, "GSDumpRaw:: Read error (%zu/%zu)\n", ret, size);
 			throw "BAD"; // Just exit the program
 		}
 	}
diff --git a/plugins/GSdx/stdafx.cpp b/plugins/GSdx/stdafx.cpp
index abb479d3d6..52d63aadab 100644
--- a/plugins/GSdx/stdafx.cpp
+++ b/plugins/GSdx/stdafx.cpp
@@ -138,7 +138,7 @@ void* fifo_alloc(size_t size, size_t repeat)
 		if (next != base)
 			fprintf(stderr, "Fail to mmap contiguous segment\n");
 		else
-			fprintf(stderr, "MMAP next %x\n", (uintptr_t)base);
+			fprintf(stderr, "MMAP next %p\n", base);
 	}
 
 	return fifo;