diff --git a/src/coreclr/ilasm/assembler.cpp b/src/coreclr/ilasm/assembler.cpp
index aaafa258a5be10..5096bbdda453fa 100644
--- a/src/coreclr/ilasm/assembler.cpp
+++ b/src/coreclr/ilasm/assembler.cpp
@@ -386,9 +386,7 @@ DWORD Assembler::CheckClassFlagsIfNested(Class* pEncloser, DWORD attr)
     DWORD wasAttr = attr;
     if(pEncloser && (!IsTdNested(attr)))
     {
-        if(OnErrGo)
-            report->error("Nested class has non-nested visibility (0x%08X)\n",attr);
-        else
+        if(!OnErrGo)
         {
             attr &= ~tdVisibilityMask;
             attr |= (IsTdPublic(wasAttr) ? tdNestedPublic : tdNestedPrivate);
@@ -397,9 +395,7 @@ DWORD Assembler::CheckClassFlagsIfNested(Class* pEncloser, DWORD attr)
     }
     else if((pEncloser==NULL) && IsTdNested(attr))
     {
-        if(OnErrGo)
-            report->error("Non-nested class has nested visibility (0x%08X)\n",attr);
-        else
+        if(!OnErrGo)
         {
             attr &= ~tdVisibilityMask;
             attr |= (IsTdNestedPublic(wasAttr) ? tdPublic : tdNotPublic);
@@ -533,8 +529,7 @@ void Assembler::AddClass()
         {
             if(!IsTdSealed(attr))
             {
-                if(OnErrGo) report->error("Non-sealed value class\n");
-                else
+                if(!OnErrGo)
                 {
                     report->warn("Non-sealed value class, made sealed\n");
                     m_pCurClass->m_Attr |= tdSealed;
@@ -626,8 +621,7 @@ void Assembler::StartMethod(_In_ __nullterminated char* name, BinStr* sig, CorMe
         *(sig->ptr()) |= IMAGE_CEE_CS_CALLCONV_HASTHIS;
     else if(*(sig->ptr()) & (IMAGE_CEE_CS_CALLCONV_HASTHIS | IMAGE_CEE_CS_CALLCONV_EXPLICITTHIS))
     {
-        if(OnErrGo) report->error("Method '%s' -- both static and instance\n", name);
-        else
+        if(!OnErrGo)
         {
             report->warn("Method '%s' -- both static and instance, set to static\n", name);
             *(sig->ptr()) &= ~(IMAGE_CEE_CS_CALLCONV_HASTHIS | IMAGE_CEE_CS_CALLCONV_EXPLICITTHIS);
@@ -713,8 +707,7 @@ void Assembler::StartMethod(_In_ __nullterminated char* name, BinStr* sig, CorMe
         {
             if(IsMdAbstract(flags))
             {
-                if(OnErrGo) report->error("Global method '%s' can't be abstract\n",name);
-                else
+                if(!OnErrGo)
                 {
                     report->warn("Global method '%s' can't be abstract, flag removed\n",name);
                     flags = (CorMethodAttr)(((int) flags) &~mdAbstract);
@@ -722,8 +715,7 @@ void Assembler::StartMethod(_In_ __nullterminated char* name, BinStr* sig, CorMe
             }
             if(!IsMdStatic(flags))
             {
-                if(OnErrGo) report->error("Non-static global method '%s'\n",name);
-                else
+                if(!OnErrGo)
                 {
                     report->warn("Non-static global method '%s', made static\n",name);
                     flags = (CorMethodAttr)(flags | mdStatic);
@@ -842,8 +834,7 @@ void Assembler::AddField(__inout_z __inout char* name, BinStr* sig, CorFieldAttr
         }
         if(!IsFdStatic(flags))
         {
-            if(OnErrGo) report->error("Non-static global field\n");
-            else
+            if(!OnErrGo)
             {
                 report->warn("Non-static global field, made static\n");
                 flags = (CorFieldAttr)(flags | fdStatic);
diff --git a/src/coreclr/ilasm/grammar_after.cpp b/src/coreclr/ilasm/grammar_after.cpp
index 6422ed744be361..f624555da12e83 100644
--- a/src/coreclr/ilasm/grammar_after.cpp
+++ b/src/coreclr/ilasm/grammar_after.cpp
@@ -1807,15 +1807,16 @@ void PrintANSILine(FILE* pF, _In_ __nullterminated char* sz)
 /**************************************************************************/
 void AsmParse::error(const char* fmt, ...)
 {
+    if(assem->OnErrGo) return;
     char *sz = (char*)(&wzUniBuf[(dwUniBuf >> 1)]);
     char *psz=&sz[0];
-    FILE* pF = ((!assem->m_fReportProgress)&&(assem->OnErrGo)) ? stdout : stderr;
+    FILE* pF = stderr;
     success = false;
     va_list args;
     va_start(args, fmt);
 
     if((penv) && (penv->in)) psz+=sprintf_s(psz, (dwUniBuf >> 1), "%s(%d) : ", penv->in->name(), penv->curLine);
-    psz+=sprintf_s(psz, (dwUniBuf >> 1), assem->OnErrGo ? "warning : " : "error : ");
+    psz+=sprintf_s(psz, (dwUniBuf >> 1), "error : ");
     _vsnprintf_s(psz, (dwUniBuf >> 1),(dwUniBuf >> 1)-strlen(sz)-1, fmt, args);
     PrintANSILine(pF,sz);
 }