diff --git a/syntax/include/arm_base_syntax.vim b/syntax/include/arm_base_syntax.vim
index 5be2589..5d820a6 100644
--- a/syntax/include/arm_base_syntax.vim
+++ b/syntax/include/arm_base_syntax.vim
@@ -33,6 +33,8 @@ so <sfile>:p:h/arm_directives.vim
 
 " Registers
 syn match armRegister "R\%(1[0-5]\|[0-9]\)"
+syn match armRegister "C\%(1[0-5]\|[0-9]\)"
+syn match armRegister "P\%(1[0-5]\|[0-9]\)"
 syn keyword armRegister FP SP LR PC SPSR CPSR CPSR_c CPSR_cxsf BP
 syn match armRegister "A[1-3]"
 syn match armRegister "V[1-8]"
diff --git a/syntax/include/armv6_base_syntax.vim b/syntax/include/armv6_base_syntax.vim
index f20b716..08e5c24 100644
--- a/syntax/include/armv6_base_syntax.vim
+++ b/syntax/include/armv6_base_syntax.vim
@@ -13,7 +13,7 @@ exec 'syn match armv6Instr "\%(SH\?\|Q\|U[QH]\?\)\%(ADD16\|SUB16\|ADD8\|SUB8\|AS
 
 exec 'syn match armv6Instr "\%(USAD8\|USADA8\|SSAT\|SSAT16\|USAT\|USAT16\)' . armCond . '\>"'
 
-exec 'syn match armv6Instr "\%(MOVT\|MRA\|MAR\|MRRC2\|MCRR2\|ORN\|BFC\|BFI\|SBFX\|UBFX\)' . armCond . '\>"'
+exec 'syn match armv6Instr "\%(MOVT\|MRA\|MAR\|ORN\|BFC\|BFI\|SBFX\|UBFX\)' . armCond . '\>"'
 
 exec 'syn match armv6Instr "\%(PKHBT\|PKHTB\|SXTH\|SXTB16\|SXTB\|SXTAH\|SXTAB16\|SXTAB\|UXTH\|UXTB\|UXTB16\|UXTAH\|UXTAB16\|UXTAB\|RBIT\|REV\|REV16\|REVSH\|SEL\)' . armCond . '\>"'
 
@@ -23,6 +23,7 @@ exec 'syn match armv6LDR "\%(LDREX[HBD]\)' . armCond . '\>"'
 exec 'syn match armv6STR "\%(STREX[HBD]\|CLREX\)' . armCond . '\>"'
 
 syn match armv6InstrNoCond "\%(IT\|CBN\?Z\|TBB\|TBH\|CPSID\|CPSIE\|CPS\|SETEND\|SRS\%(IA\|IB\|DA\|DB\)\|RFE\%(IA\|IB\|DA\|DB\)\)\>"
+syn keyword armv6InstrNoCond MRRC2 MCRR2
 
 exec 'syn match armv7Instr "\%(DBG\|DMB\|DSB\|ISB\|SEV\|WFE\|WFI\|YIELD\)' . armCond . '\>"'