diff --git a/base/applications/drwtsn32/main.cpp b/base/applications/drwtsn32/main.cpp
index 2f865188368..65c7dc19956 100644
--- a/base/applications/drwtsn32/main.cpp
+++ b/base/applications/drwtsn32/main.cpp
@@ -32,6 +32,7 @@ void xfprintf(FILE* stream, const char *fmt, ...)
     va_start(ap, fmt);
     vfprintf(stream, fmt, ap);
     vDbgPrintEx(-1, DPFLTR_ERROR_LEVEL, fmt, ap);
+    va_end(ap);
 }
 
 
diff --git a/modules/rosapps/applications/devutils/shimdbg/shimdbg.c b/modules/rosapps/applications/devutils/shimdbg/shimdbg.c
index da1117036ce..9d8570cf61b 100644
--- a/modules/rosapps/applications/devutils/shimdbg/shimdbg.c
+++ b/modules/rosapps/applications/devutils/shimdbg/shimdbg.c
@@ -20,6 +20,7 @@ void xprintf(const char *fmt, ...)
     va_start(ap, fmt);
     vprintf(fmt, ap);
     vDbgPrintEx(-1, DPFLTR_ERROR_LEVEL, fmt, ap);
+    va_end(ap);
 }