diff --git a/inst/sub.g b/inst/sub.g
index 60d6dd9e..e0171cad 100644
--- a/inst/sub.g
+++ b/inst/sub.g
@@ -1,7 +1,7 @@
 //loop
 statement_list : (statement)+ ;
 
-statement: advan_statement 
+statement: advan_statement
     | trans_statement
     | tol_statement
     | atol_statement
@@ -47,7 +47,7 @@ sstol_statement2: sstol_keyword '=' nonSpace;
 sstol_statement: sstol_statement1 | sstol_statement2 | sstol_statement3;
 
 unsupported_subnames: 'SS' | 'PK' | 'ERROR' | 'DES' | 'AES' | 'INFN' | 'MODEL'
-    'ss' | 'pk' | 'error' | 'des' | 'aes' | 'infn' | 'model' |
+        'ss' | 'pk' | 'error' | 'des' | 'aes' | 'infn' | 'model' |
     'Ss' | 'Pk' | 'Error' | 'Des' | 'Aes' | 'Infn' | 'Model';
 
 unsupported_statement: unsupported_subnames '=' nonSpace;
@@ -56,7 +56,7 @@ decimalint: "0|([1-9][0-9]*)" $term -1;
 string: "\"([^\"\\]|\\[^])*\"";
 float1: "([0-9]+.[0-9]*|[0-9]*.[0-9]+)([eE][\-\+]?[0-9]+)?" $term -2;
 float2: "[0-9]+[eE][\-\+]?[0-9]+" $term -3;
-whitespace: ( "[ \t\r\n]+" | singleLineComment )*;
+whitespace: ( "[ \t\r\n, ]+" | singleLineComment )*;
 singleLineComment: ';' "[^\n]*";
 nonSpace: "[^0-9 \n][^ \n]*";
 identifier_nm: "[a-zA-Z][a-zA-Z0-9_]*" $term -4;
diff --git a/src/sub.g.d_parser.h b/src/sub.g.d_parser.h
index e9767080..8d5c8b4c 100644
--- a/src/sub.g.d_parser.h
+++ b/src/sub.g.d_parser.h
@@ -1022,14 +1022,14 @@ d_accepts_diff_82_0_nonmem2rxSub
 unsigned char d_scanner_82_0_0_nonmem2rxSub[SCANNER_BLOCK_SIZE] = {
 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 0, 0, 2, 0, 0, 
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
+2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 
 };
 
 unsigned char d_scanner_82_1_0_nonmem2rxSub[SCANNER_BLOCK_SIZE] = {
 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 0, 0, 2, 0, 0, 
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
+2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
 };
 
@@ -2526,7 +2526,7 @@ D_Symbol d_symbols_nonmem2rxSub[] = {
 {D_SYMBOL_REGEX, "\\\"([^\\\"\\\\\\\\]|\\\\\\\\[^])*\\\"", 38, -1},
 {D_SYMBOL_REGEX, "([0-9]+.[0-9]*|[0-9]*.[0-9]+)([eE][\\\\-\\\\+]?[0-9]+)?", 55, -1},
 {D_SYMBOL_REGEX, "[0-9]+[eE][\\\\-\\\\+]?[0-9]+", 29, -1},
-{D_SYMBOL_REGEX, "[ \\t\\r\\n]+", 13, -1},
+{D_SYMBOL_REGEX, "[ \\t\\r\\n, ]+", 15, -1},
 {D_SYMBOL_STRING, ";", 1, -1},
 {D_SYMBOL_REGEX, "[^\\n]*", 7, -1},
 {D_SYMBOL_REGEX, "[^0-9 \\n][^ \\n]*", 18, -1},
diff --git a/tests/testthat/test-sub.R b/tests/testthat/test-sub.R
index e8458d37..90b93166 100644
--- a/tests/testthat/test-sub.R
+++ b/tests/testthat/test-sub.R
@@ -13,6 +13,7 @@ test_that("test sub", {
 
   expect_error(.s("tranvan1"))
 
+  .s("ADVAN1,TRANS2", c(advan=1L, trans=2L, abbrevLin=1L))
   .s("ADVAN1 TRANS1", c(advan=1L, trans=1L, abbrevLin=1L))
   .s("ADVAN1 TRANS2", c(advan=1L, trans=2L, abbrevLin=1L))
   .s("ADVAN=ADVAN1 TRANS=TRANS2", c(advan=1L, trans=2L, abbrevLin=1L))