diff --git a/tools/cooja/config/external_tools_linux.config b/tools/cooja/config/external_tools_linux.config
index 85825894f..1c9ee9cb1 100644
--- a/tools/cooja/config/external_tools_linux.config
+++ b/tools/cooja/config/external_tools_linux.config
@@ -7,8 +7,8 @@ PATH_SHELL = sh
 PATH_C_COMPILER = gcc
 PATH_OBJDUMP=objdump
 OBJDUMP_ARGS=-h
-CMD_GREP_PROCESSES = grep "^PROCESS_THREAD([^,]*,[^,]*,[^)]*)" -o -H
-REGEXP_PARSE_PROCESSES = ([^/]*.c):PROCESS_THREAD\\(([^,]*),[^,]*,[^)]*\\)
+CMD_GREP_PROCESSES = grep "^PROCESS_THREAD[ ]*([^,]*,[^,]*,[^)]*)" -o -H
+REGEXP_PARSE_PROCESSES = ([^/]*.c):PROCESS_THREAD[ ]*\\(([^,]*),[^,]*,[^)]*\\)
 CMD_GREP_INTERFACES = grep "^SIM_INTERFACE([^,]*," -o -d skip -D skip -H -r
 REGEXP_PARSE_INTERFACES = ([^/]*.c):SIM_INTERFACE\\(([^,]*),
 CMD_GREP_SENSORS = grep "^SENSORS_SENSOR([^,]*," -o -d skip -D skip -H -r
diff --git a/tools/cooja/config/external_tools_macosx.config b/tools/cooja/config/external_tools_macosx.config
index 738d81402..b1df1858f 100644
--- a/tools/cooja/config/external_tools_macosx.config
+++ b/tools/cooja/config/external_tools_macosx.config
@@ -7,8 +7,8 @@ PATH_SHELL = sh
 PATH_C_COMPILER = gcc
 PATH_OBJDUMP= objdump
 OBJDUMP_ARGS= -h
-CMD_GREP_PROCESSES = grep "^PROCESS_THREAD([^,]*,[^,]*,[^)]*)" -o -H
-REGEXP_PARSE_PROCESSES = ([^/]*.c):PROCESS_THREAD\\(([^,]*),[^,]*,[^)]*\\)
+CMD_GREP_PROCESSES = grep "^PROCESS_THREAD[ ]*([^,]*,[^,]*,[^)]*)" -o -H
+REGEXP_PARSE_PROCESSES = ([^/]*.c):PROCESS_THREAD[ ]*\\(([^,]*),[^,]*,[^)]*\\)
 CMD_GREP_INTERFACES = grep "^SIM_INTERFACE([^,]*," -o -d skip -D skip -H -r
 REGEXP_PARSE_INTERFACES = ([^/]*.c):SIM_INTERFACE\\(([^,]*),
 CMD_GREP_SENSORS = grep "^SENSORS_SENSOR([^,]*," -o -d skip -D skip -H -r
diff --git a/tools/cooja/config/external_tools_win32.config b/tools/cooja/config/external_tools_win32.config
index 97c17f745..3101743c4 100644
--- a/tools/cooja/config/external_tools_win32.config
+++ b/tools/cooja/config/external_tools_win32.config
@@ -7,8 +7,8 @@ PATH_SHELL = sh
 PATH_C_COMPILER = gcc
 PATH_OBJDUMP=objdump
 OBJDUMP_ARGS=-h
-CMD_GREP_PROCESSES = grep '^PROCESS_THREAD([^,]*,[^,]*,[^)]*)' -o -d skip -D skip -H -r
-REGEXP_PARSE_PROCESSES = ([^/]*.c):PROCESS_THREAD\\(([^,]*),[^,]*,[^)]*\\)
+CMD_GREP_PROCESSES = grep '^PROCESS_THREAD[ ]*([^,]*,[^,]*,[^)]*)' -o -d skip -D skip -H -r
+REGEXP_PARSE_PROCESSES = ([^/]*.c):PROCESS_THREAD[ ]*\\(([^,]*),[^,]*,[^)]*\\)
 CMD_GREP_INTERFACES = grep '^SIM_INTERFACE([^,]*,' -o -d skip -D skip -H -r
 REGEXP_PARSE_INTERFACES = ([^/]*.c):SIM_INTERFACE\\(([^,]*),
 CMD_GREP_SENSORS = grep '^SENSORS_SENSOR([^,]*,' -o -d skip -D skip -H -r