diff --git a/3rdparty/libprojectm/MilkdropPresetFactory/Parser.cpp b/3rdparty/libprojectm/MilkdropPresetFactory/Parser.cpp
index 23e628b9b..cdf8256c1 100644
--- a/3rdparty/libprojectm/MilkdropPresetFactory/Parser.cpp
+++ b/3rdparty/libprojectm/MilkdropPresetFactory/Parser.cpp
@@ -1373,6 +1373,8 @@ PerFrameEqn * Parser::parse_implicit_per_frame_eqn(std::istream &  fs, char * pa
   PerFrameEqn * per_frame_eqn;
   GenExpr * gen_expr;
 
+  if (fs == NULL)
+    return NULL;
   if (param_string == NULL)
     return NULL;
   if (preset == NULL)
@@ -1526,6 +1528,8 @@ InitCond * Parser::parse_per_frame_init_eqn(std::istream &  fs, MilkdropPreset *
 
   if (preset == NULL)
     return NULL;
+  if (fs == NULL)
+    return NULL;
 
   if ((token = parseToken(fs, name)) != tEq)
     return NULL;
@@ -1838,6 +1842,8 @@ int Parser::parse_shapecode(char * token, std::istream &  fs, MilkdropPreset * p
   /* Null argument checks */
   if (preset == NULL)
     return PROJECTM_FAILURE;
+  if (fs == NULL)
+    return PROJECTM_FAILURE;
   if (token == NULL)
     return PROJECTM_FAILURE;
 
@@ -2127,6 +2133,8 @@ int Parser::parse_wave(char * token, std::istream &  fs, MilkdropPreset * preset
 
   if (token == NULL)
     return PROJECTM_FAILURE;
+  if (fs == NULL)
+    return PROJECTM_FAILURE;
   if (preset == NULL)
     return PROJECTM_FAILURE;
 
@@ -2306,6 +2314,8 @@ int Parser::parse_shape(char * token, std::istream &  fs, MilkdropPreset * prese
 
   if (token == NULL)
 
+    return PROJECTM_FAILURE;
+  if (fs == NULL)
     return PROJECTM_FAILURE;
   if (preset == NULL)
     return PROJECTM_FAILURE;