diff --git a/vcf/parser.py b/vcf/parser.py
index bc51ee9..2124798 100644
--- a/vcf/parser.py
+++ b/vcf/parser.py
@@ -82,25 +82,25 @@ class _vcf_metadata_parser(object):
     def __init__(self):
         super(_vcf_metadata_parser, self).__init__()
         self.info_pattern = re.compile(r'''\#\#INFO=<
-            ID=(?P<id>[^,]+),
-            Number=(?P<number>-?\d+|\.|[AGR]),
-            Type=(?P<type>Integer|Float|Flag|Character|String),
+            ID=(?P<id>[^,]+),\s*
+            Number=(?P<number>-?\d+|\.|[AGR]),\s*
+            Type=(?P<type>Integer|Float|Flag|Character|String),\s*
             Description="(?P<desc>[^"]*)"
-            (?:,Source="(?P<source>[^"]*)")?
-            (?:,Version="?(?P<version>[^"]*)"?)?
+            (?:,\s*Source="(?P<source>[^"]*)")?
+            (?:,\s*Version="?(?P<version>[^"]*)"?)?
             >''', re.VERBOSE)
         self.filter_pattern = re.compile(r'''\#\#FILTER=<
-            ID=(?P<id>[^,]+),
+            ID=(?P<id>[^,]+),\s*
             Description="(?P<desc>[^"]*)"
             >''', re.VERBOSE)
         self.alt_pattern = re.compile(r'''\#\#ALT=<
-            ID=(?P<id>[^,]+),
+            ID=(?P<id>[^,]+),\s*
             Description="(?P<desc>[^"]*)"
             >''', re.VERBOSE)
         self.format_pattern = re.compile(r'''\#\#FORMAT=<
-            ID=(?P<id>.+),
-            Number=(?P<number>-?\d+|\.|[AGR]),
-            Type=(?P<type>.+),
+            ID=(?P<id>.+),\s*
+            Number=(?P<number>-?\d+|\.|[AGR]),\s*
+            Type=(?P<type>.+),\s*
             Description="(?P<desc>.*)"
             >''', re.VERBOSE)
         self.contig_pattern = re.compile(r'''\#\#contig=<
diff --git a/vcf/test/metadata-whitespace.vcf b/vcf/test/metadata-whitespace.vcf
new file mode 100644
index 0000000..c163f9a
--- /dev/null
+++ b/vcf/test/metadata-whitespace.vcf
@@ -0,0 +1,56 @@
+##fileformat=VCFv4.2
+##FILTER=<ID=PASS, Description="All filters passed">
+##samtoolsVersion=1.0-17-gfaf4dd6+htslib-1.0-11-g830ea73
+##samtoolsCommand=samtools mpileup -u -t DP,DPR,DV,DP4,INFO/DPR,SP -f /data/archive/reference/Anopheles-arabiensis-Dongola_SCAFFOLDS_AaraD1.fa -r KB704451:0004153102-0004172483 huge_list_of_bam_files_removed
+##reference=file:///data/archive/reference/Anopheles-arabiensis-Dongola_SCAFFOLDS_AaraD1.fa
+##contig=<ID=KB704451,length=13998812>
+##ALT=<ID=X,Description="Represents allele(s) other than observed.">
+##INFO=<ID=INDEL, Number=0, Type=Flag, Description="Indicates that the variant is an INDEL.">
+##INFO=<ID=IDV, Number=1, Type=Integer, Description="Maximum number of reads supporting an indel">
+##INFO=<ID=IMF,Number=1,Type=Float,Description="Maximum fraction of reads supporting an indel">
+##INFO=<ID=DP,Number=1,Type=Integer,Description="Raw read depth">
+##INFO=<ID=VDB,Number=1,Type=Float,Description="Variant Distance Bias for filtering splice-site artefacts in RNA-seq data (bigger is better)",Version=3>
+##INFO=<ID=RPB,Number=1,Type=Float,Description="Mann-Whitney U test of Read Position Bias (bigger is better)">
+##INFO=<ID=MQB,Number=1,Type=Float,Description="Mann-Whitney U test of Mapping Quality Bias (bigger is better)">
+##INFO=<ID=BQB,Number=1,Type=Float,Description="Mann-Whitney U test of Base Quality Bias (bigger is better)">
+##INFO=<ID=MQSB,Number=1,Type=Float,Description="Mann-Whitney U test of Mapping Quality vs Strand Bias (bigger is better)">
+##INFO=<ID=SGB,Number=1,Type=Float,Description="Segregation based metric.">
+##INFO=<ID=MQ0F,Number=1,Type=Float,Description="Fraction of MQ0 reads (smaller is better)">
+##FORMAT=<ID=PL, Number=G, Type=Integer, Description="List of Phred-scaled genotype likelihoods">
+##FORMAT=<ID=DP,Number=1,Type=Integer,Description="Number of high-quality bases">
+##FORMAT=<ID=DV,Number=1,Type=Integer,Description="Number of high-quality non-reference bases">
+##FORMAT=<ID=DPR,Number=R,Type=Integer,Description="Number of high-quality bases observed for each allele">
+##INFO=<ID=DPR,Number=R,Type=Integer,Description="Number of high-quality bases observed for each allele">
+##FORMAT=<ID=DP4, Number=4,   Type=Integer,   Description="Number of high-quality ref-fwd, ref-reverse, alt-fwd and alt-reverse bases">
+##FORMAT=<ID=SP,Number=1,Type=Integer,Description="Phred-scaled strand bias P-value">
+##FORMAT=<ID=GT,Number=1,Type=String,Description="Genotype">
+##FORMAT=<ID=GQ,Number=1,Type=Integer,Description="Phred-scaled Genotype Quality">
+##FORMAT=<ID=GP,Number=G,Type=Float,Description="Phred-scaled genotype posterior probabilities">
+##INFO=<ID=ICB,Number=1,Type=Float,Description="Inbreeding Coefficient Binomial test (bigger is better)">
+##INFO=<ID=HOB,Number=1,Type=Float,Description="Bias in the number of HOMs number (smaller is better)">
+##INFO=<ID=AC,Number=A,Type=Integer,Description="Allele count in genotypes for each ALT allele, in the same order as listed">
+##INFO=<ID=AN,Number=1,Type=Integer,Description="Total number of alleles in called genotypes">
+##INFO=<ID=DP4,Number=4,Type=Integer,Description="Number of high-quality ref-forward , ref-reverse, alt-forward and alt-reverse bases">
+##INFO=<ID=MQ,Number=1,Type=Integer,Description="Average mapping quality">
+##bcftools_callVersion=1.0-55-gc661821+htslib-1.0-11-g830ea73
+##bcftools_callCommand=call -m -vM -f GQ,GP
+##SnpSiftVersion="SnpSift 3.6c (build 2014-05-20), by Pablo Cingolani"
+##SnpSiftCmd="SnpSift varType - "
+##INFO=<ID=VARTYPE, Number=A, Type=Flag, Description="Variant types {SNP,MNP,INS,DEL,Mixed}">
+##INFO=<ID=SNP, Number=0, Type=Flag, Description="Variant is a SNP">
+##INFO=<ID=MNP,Number=0,Type=Flag,Description="Variant is an MNP">
+##INFO=<ID=INS,	Number=0,	Type=Flag,	Description="Variant is an insertion">
+##INFO=<ID=DEL,Number=0,Type=Flag,Description="Variant is an deletion">
+##INFO=<ID=MIXED,Number=0,Type=Flag,Description="Variant is mixture of INS/DEL/SNP/MNP">
+##INFO=<ID=HOM,   Number=0,Type=Flag,     Description="Variant is homozygous">
+##INFO=<ID=HET,Number=0,Type=Flag,Description="Variant is heterozygous">
+##INFO=<ID=VARTYPE,Number=A,Type=String,Description="Comma separated list of variant types. One per allele">
+#CHROM  POS ID  REF ALT QUAL    FILTER  INFO    FORMAT  LUPI059 MINE001 OKJ042  LUPI001 LUPI007 LUPI024 LUPI056 LUPI071 LUPI074 LUPI082 MINE040 MINE100 MINE101 MINE105 MINE111 OKJ017  OKJ045  OKJ070  SAGA066 SAGA107 SAGA131 SAGA133 SAGA134 SAGA141 2012L_LUPI_002  2012L_LUPI_015  2012L_LUPI_017  2012L_LUPI_018  2012L_LUPI_035  2012L_LUPI_062  2012L_LUPI_065  2012L_LUPI_077  2012L_LUPI_083  2012L_LUPI_116  2012L_LUPI_013  2012L_LUPI_041  2012L_LUPI_068  2012L_LUPI_096  2012L_LUPI_098  2012L_LUPI_101  2012L_LUPI_103  2012_LUPI_156   2012_LUPI_157   2012_LUPI_161   2012_LUPI_171   2012_LUPI_173   2012_LUPI_180   2012L_LUPI_010  2012L_LUPI_012  2012L_LUPI_021  2012L_LUPI_045  2012L_LUPI_047  2012L_LUPI_060  2012L_LUPI_061  2012L_LUPI_067  2012_LUPI_125   2012_LUPI_129   2012_LUPI_146   2012_LUPI_178   2012_LUPI_211   2012_LUPI_277   2012_LUPI_278   2012_LUPI_279   2012_LUPI_284
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diff --git a/vcf/test/test_vcf.py b/vcf/test/test_vcf.py
index 3782d12..729d6ee 100644
--- a/vcf/test/test_vcf.py
+++ b/vcf/test/test_vcf.py
@@ -457,6 +457,27 @@ def test_samples(self):
         self.assertEqual(self.reader.samples, self.samples)
 
 
+class TestMetadataWhitespace(unittest.TestCase):
+    filename = 'metadata-whitespace.vcf'
+    def test_metadata_whitespace(self):
+        """
+        Test parsing metadata header lines with whitespace.
+        """
+        self.reader = vcf.Reader(fh(self.filename))
+
+        # Pick one INFO line and assert that we parsed it correctly.
+        info_indel = self.reader.infos['INDEL']
+        assert info_indel.id == 'INDEL'
+        assert info_indel.num == 0
+        assert info_indel.type == 'Flag'
+        assert info_indel.desc == 'Indicates that the variant is an INDEL.'
+
+        # Test we can walk the file at least.
+        for r in self.reader:
+            for c in r:
+                pass
+
+
 class TestMixedFiltering(unittest.TestCase):
     filename = 'mixed-filtering.vcf'
     def test_mixed_filtering(self):
@@ -1470,6 +1491,7 @@ def test_write_uncalled(self):
 suite.addTests(unittest.TestLoader().loadTestsFromTestCase(TestBcfToolsOutputWriter))
 suite.addTests(unittest.TestLoader().loadTestsFromTestCase(TestWriterDictionaryMeta))
 suite.addTests(unittest.TestLoader().loadTestsFromTestCase(TestSamplesSpace))
+suite.addTests(unittest.TestLoader().loadTestsFromTestCase(TestMetadataWhitespace))
 suite.addTests(unittest.TestLoader().loadTestsFromTestCase(TestMixedFiltering))
 suite.addTests(unittest.TestLoader().loadTestsFromTestCase(TestRecord))
 suite.addTests(unittest.TestLoader().loadTestsFromTestCase(TestCall))