diff --git a/renderdoc/replay/replay_renderer.cpp b/renderdoc/replay/replay_renderer.cpp
index 50b5003f2..6eaf3a7a4 100644
--- a/renderdoc/replay/replay_renderer.cpp
+++ b/renderdoc/replay/replay_renderer.cpp
@@ -1034,6 +1034,9 @@ bool ReplayRenderer::SaveTexture(const TextureSave &saveData, const char *path)
 			p.m_quality = sd.jpegQuality;
 
 			int len = td.width*td.height*td.format.compCount;
+			// ensure buffer is at least 1024
+			if(len < 1024)
+				len = 1024;
 
 			char *jpgdst = new char[len];